{"id":26841,"date":"2024-08-30T15:04:00","date_gmt":"2024-08-30T15:04:00","guid":{"rendered":"https:\/\/goodwriterz.com\/site\/?p=26841"},"modified":"2024-08-30T15:04:00","modified_gmt":"2024-08-30T15:04:00","slug":"%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af","status":"publish","type":"post","link":"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/","title":{"rendered":"\u0643\u064a\u0641\u064a\u0629 \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0641\u064a \u0644\u064a\u0646\u0643\u0633 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_68_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A7%D9%84%D9%86%D9%82%D8%A7%D8%B7_%D8%A7%D9%84%D8%B1%D8%A6%D9%8A%D8%B3%D9%8A%D8%A9\" title=\"\u0627\u0644\u0646\u0642\u0627\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629\">\u0627\u0644\u0646\u0642\u0627\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A7%D9%84%D8%A3%D9%85%D8%B1_expr\" title=\"\u0627\u0644\u0623\u0645\u0631 expr\">\u0627\u0644\u0623\u0645\u0631 expr<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%AE%D9%8A%D8%A7%D8%B1%D8%A7%D8%AA_%D8%A3%D9%85%D8%B1_expr\" title=\"\u062e\u064a\u0627\u0631\u0627\u062a \u0623\u0645\u0631 expr\">\u062e\u064a\u0627\u0631\u0627\u062a \u0623\u0645\u0631 expr<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A5%D8%AC%D8%B1%D8%A7%D8%A1_%D8%A7%D9%84%D8%B9%D9%85%D9%84%D9%8A%D8%A7%D8%AA_%D8%A7%D9%84%D8%AD%D8%B3%D8%A7%D8%A8%D9%8A%D8%A9_%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_expr\" title=\"\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr\">\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A3%D9%8A%D8%B6%D9%8B%D8%A7_%D9%85%D9%86%D8%B9_shell_%D9%85%D9%86_%D8%AA%D9%81%D8%B3%D9%8A%D8%B1_%D8%A7%D9%84%D8%A3%D8%AD%D8%B1%D9%81_%D8%B9%D9%86_%D8%B7%D8%B1%D9%8A%D9%82_%D8%A7%D9%82%D8%AA%D8%A8%D8%A7%D8%B3_%D8%A7%D9%84%D9%88%D8%B3%D8%A7%D8%A6%D8%B7_%D9%88%D8%A7%D9%84%D8%B9%D9%88%D8%A7%D9%85%D9%84_%D8%A8%D8%B4%D9%83%D9%84_%D8%B5%D8%AD%D9%8A%D8%AD\" title=\"\u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0645\u0646\u0639 shell \u0645\u0646 \u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0623\u062d\u0631\u0641 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0627\u0642\u062a\u0628\u0627\u0633 \u0627\u0644\u0648\u0633\u0627\u0626\u0637 \u0648\u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d:\">\u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0645\u0646\u0639 shell \u0645\u0646 \u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0623\u062d\u0631\u0641 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0627\u0642\u062a\u0628\u0627\u0633 \u0627\u0644\u0648\u0633\u0627\u0626\u0637 \u0648\u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A8%D9%87%D8%B0%D9%87_%D8%A7%D9%84%D8%B7%D8%B1%D9%8A%D9%82%D8%A9%D8%8C_%D9%8A%D9%88%D9%81%D8%B1_%D8%A7%D9%84%D8%A3%D9%85%D8%B1_expr_%D8%B7%D8%B1%D9%8A%D9%82%D8%A9_%D8%A8%D8%B3%D9%8A%D8%B7%D8%A9_%D9%88%D9%81%D8%B9%D8%A7%D9%84%D8%A9_%D9%84%D9%85%D9%82%D8%A7%D8%B1%D9%86%D8%A9_%D8%A7%D9%84%D9%82%D9%8A%D9%85_%D8%A7%D9%84%D8%B9%D8%AF%D8%AF%D9%8A%D8%A9\" title=\"\u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629\u060c \u064a\u0648\u0641\u0631 \u0627\u0644\u0623\u0645\u0631 expr \u0637\u0631\u064a\u0642\u0629 \u0628\u0633\u064a\u0637\u0629 \u0648\u0641\u0639\u0627\u0644\u0629 \u0644\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0639\u062f\u062f\u064a\u0629.\">\u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629\u060c \u064a\u0648\u0641\u0631 \u0627\u0644\u0623\u0645\u0631 expr \u0637\u0631\u064a\u0642\u0629 \u0628\u0633\u064a\u0637\u0629 \u0648\u0641\u0639\u0627\u0644\u0629 \u0644\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0639\u062f\u062f\u064a\u0629.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A7%D9%84%D9%86%D8%AA%D9%8A%D8%AC%D8%A9_%D9%87%D9%8A_11_%D9%84%D8%A3%D9%86_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D8%AA%D8%AD%D8%AA%D9%88%D9%8A_%D8%B9%D9%84%D9%89_%D8%AA%D8%B3%D8%B9%D8%A9_%D8%A3%D8%AD%D8%B1%D9%81_%D9%88%D9%85%D8%B3%D8%A7%D9%81%D8%AA%D9%8A%D9%86_%D9%81%D8%A7%D8%B1%D8%BA%D8%AA%D9%8A%D9%86_%D8%A5%D8%B0%D8%A7_%D9%83%D9%86%D8%AA_%D8%AA%D8%B1%D9%8A%D8%AF_%D9%85%D8%B9%D8%B1%D9%81%D8%A9_%D8%B7%D9%88%D9%84_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D8%A8%D8%AF%D9%88%D9%86_%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA_%D9%81%D8%A7%D8%B1%D8%BA%D8%A9%D8%8C_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_%D8%A3%D9%88%D8%A7%D9%85%D8%B1_%D8%A3%D8%AE%D8%B1%D9%89_%D9%85%D8%AB%D9%84_tr_%D8%A3%D9%88_awk_%D9%84%D8%A5%D8%B2%D8%A7%D9%84%D8%AA%D9%87%D8%A7_%D8%A3%D9%88%D9%84%D8%A7%D9%8B_%D8%B9%D9%84%D9%89_%D8%B3%D8%A8%D9%8A%D9%84_%D8%A7%D9%84%D9%85%D8%AB%D8%A7%D9%84\" title=\"\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0647\u064a 11 \u0644\u0623\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u062a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u062a\u0633\u0639\u0629 \u0623\u062d\u0631\u0641 \u0648\u0645\u0633\u0627\u0641\u062a\u064a\u0646 \u0641\u0627\u0631\u063a\u062a\u064a\u0646. \u0625\u0630\u0627 \u0643\u0646\u062a \u062a\u0631\u064a\u062f \u0645\u0639\u0631\u0641\u0629 \u0637\u0648\u0644 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0628\u062f\u0648\u0646 \u0645\u0633\u0627\u0641\u0627\u062a \u0641\u0627\u0631\u063a\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0648\u0627\u0645\u0631 \u0623\u062e\u0631\u0649 \u0645\u062b\u0644 tr \u0623\u0648 awk \u0644\u0625\u0632\u0627\u0644\u062a\u0647\u0627 \u0623\u0648\u0644\u0627\u064b. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644:\">\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0647\u064a 11 \u0644\u0623\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u062a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u062a\u0633\u0639\u0629 \u0623\u062d\u0631\u0641 \u0648\u0645\u0633\u0627\u0641\u062a\u064a\u0646 \u0641\u0627\u0631\u063a\u062a\u064a\u0646. \u0625\u0630\u0627 \u0643\u0646\u062a \u062a\u0631\u064a\u062f \u0645\u0639\u0631\u0641\u0629 \u0637\u0648\u0644 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0628\u062f\u0648\u0646 \u0645\u0633\u0627\u0641\u0627\u062a \u0641\u0627\u0631\u063a\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0648\u0627\u0645\u0631 \u0623\u062e\u0631\u0649 \u0645\u062b\u0644 tr \u0623\u0648 awk \u0644\u0625\u0632\u0627\u0644\u062a\u0647\u0627 \u0623\u0648\u0644\u0627\u064b. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A7%D9%84%D9%86%D8%AA%D9%8A%D8%AC%D8%A9_%D9%87%D9%8A_11_%D8%AD%D9%8A%D8%AB_%D8%A3%D9%86_%D9%83%D9%84%D8%A7_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%AA%D9%8A%D9%86_%D9%84%D8%AF%D9%8A%D9%87%D9%85%D8%A7_%D8%AC%D9%85%D9%8A%D8%B9_%D8%A7%D9%84%D8%A3%D8%AD%D8%B1%D9%81_%D8%A7%D9%84%D9%85%D8%B4%D8%AA%D8%B1%D9%83%D8%A9%D8%8C_%D8%A8%D9%85%D8%A7_%D9%81%D9%8A_%D8%B0%D9%84%D9%83_%D8%A7%D9%84%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA_%D8%A7%D9%84%D8%A8%D9%8A%D8%B6%D8%A7%D8%A1\" title=\"\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0647\u064a 11 \u062d\u064a\u062b \u0623\u0646 \u0643\u0644\u0627 \u0627\u0644\u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0644\u062f\u064a\u0647\u0645\u0627 \u062c\u0645\u064a\u0639 \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u0645\u0634\u062a\u0631\u0643\u0629\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0627\u0644\u0628\u064a\u0636\u0627\u0621.\">\u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0647\u064a 11 \u062d\u064a\u062b \u0623\u0646 \u0643\u0644\u0627 \u0627\u0644\u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0644\u062f\u064a\u0647\u0645\u0627 \u062c\u0645\u064a\u0639 \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u0645\u0634\u062a\u0631\u0643\u0629\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0627\u0644\u0628\u064a\u0636\u0627\u0621.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D9%84%D8%A7%D8%B3%D8%AA%D8%AE%D8%B1%D8%A7%D8%AC_%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D9%81%D8%B1%D8%B9%D9%8A%D8%A9_%D9%85%D9%86_%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D9%85%D8%B9%D9%8A%D9%86%D8%A9%D8%8C_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_%D8%A7%D9%84%D8%A3%D9%85%D8%B1_expr_%D9%85%D8%B9_%D8%B9%D8%A7%D9%85%D9%84_substr_%D8%A8%D9%87%D8%B0%D9%87_%D8%A7%D9%84%D8%B7%D8%B1%D9%8A%D9%82%D8%A9%D8%8C_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A7%D8%B3%D8%AA%D8%AE%D8%B1%D8%A7%D8%AC_%D9%85%D8%B9%D9%84%D9%88%D9%85%D8%A7%D8%AA_%D9%85%D8%AD%D8%AF%D8%AF%D8%A9_%D9%85%D9%86_%D9%86%D8%B5_%D8%A3%D9%83%D8%A8%D8%B1%D8%8C_%D9%85%D8%AB%D9%84_%D8%A7%D9%84%D8%A7%D8%B3%D9%85_%D8%A3%D9%88_%D8%A7%D9%84%D8%AA%D8%A7%D8%B1%D9%8A%D8%AE_%D8%A3%D9%88_%D8%A3%D9%8A_%D8%B1%D9%85%D8%B2_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A3%D9%8A%D8%B6%D9%8B%D8%A7_%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_%D9%87%D8%B0%D8%A7_%D8%A7%D9%84%D8%B9%D8%A7%D9%85%D9%84_%D9%84%D8%A5%D8%B2%D8%A7%D9%84%D8%A9_%D8%A7%D9%84%D8%A3%D8%AD%D8%B1%D9%81_%D8%A3%D9%88_%D8%A7%D9%84%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA_%D8%BA%D9%8A%D8%B1_%D8%A7%D9%84%D9%85%D8%B1%D8%BA%D9%88%D8%A8_%D9%81%D9%8A%D9%87%D8%A7_%D9%85%D9%86_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%A9\" title=\"\u0644\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0633\u0644\u0633\u0644\u0629 \u0641\u0631\u0639\u064a\u0629 \u0645\u0646 \u0633\u0644\u0633\u0644\u0629 \u0645\u0639\u064a\u0646\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u0639\u0627\u0645\u0644 substr. \u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0645\u062d\u062f\u062f\u0629 \u0645\u0646 \u0646\u0635 \u0623\u0643\u0628\u0631\u060c \u0645\u062b\u0644 \u0627\u0644\u0627\u0633\u0645 \u0623\u0648 \u0627\u0644\u062a\u0627\u0631\u064a\u062e \u0623\u0648 \u0623\u064a \u0631\u0645\u0632. \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0639\u0627\u0645\u0644 \u0644\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u0623\u062d\u0631\u0641 \u0623\u0648 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0645\u0631\u063a\u0648\u0628 \u0641\u064a\u0647\u0627 \u0645\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629.\">\u0644\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0633\u0644\u0633\u0644\u0629 \u0641\u0631\u0639\u064a\u0629 \u0645\u0646 \u0633\u0644\u0633\u0644\u0629 \u0645\u0639\u064a\u0646\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u0639\u0627\u0645\u0644 substr. \u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0645\u062d\u062f\u062f\u0629 \u0645\u0646 \u0646\u0635 \u0623\u0643\u0628\u0631\u060c \u0645\u062b\u0644 \u0627\u0644\u0627\u0633\u0645 \u0623\u0648 \u0627\u0644\u062a\u0627\u0631\u064a\u062e \u0623\u0648 \u0623\u064a \u0631\u0645\u0632. \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0639\u0627\u0645\u0644 \u0644\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u0623\u062d\u0631\u0641 \u0623\u0648 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0645\u0631\u063a\u0648\u0628 \u0641\u064a\u0647\u0627 \u0645\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/#%D8%A7%D9%84%D8%A2%D9%86%D8%8C_%D9%82%D9%85_%D8%A8%D8%AA%D9%86%D9%81%D9%8A%D8%B0_%D8%A7%D9%84%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D8%AC_%D8%A7%D9%84%D9%86%D8%B5%D9%8A_%D8%B9%D9%86_%D8%B7%D8%B1%D9%8A%D9%82_%D8%AA%D8%B4%D8%BA%D9%8A%D9%84\" title=\"\u0627\u0644\u0622\u0646\u060c \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0646\u0635\u064a \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u0634\u063a\u064a\u0644:\">\u0627\u0644\u0622\u0646\u060c \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0646\u0635\u064a \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u0634\u063a\u064a\u0644:<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<section class=\"emaki-custom-block emaki-custom-key-points\">\n<div class=\"emaki-custom key-points\" id=\"custom_block_0\">\n<h3 class=\"title icon i-list\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D9%86%D9%82%D8%A7%D8%B7_%D8%A7%D9%84%D8%B1%D8%A6%D9%8A%D8%B3%D9%8A%D8%A9\"><\/span>\u0627\u0644\u0646\u0642\u0627\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<div class=\"custom_block-content key-points\">\n<ul>\n<li>  \u064a\u0645\u0643\u0646 \u0644\u0623\u0645\u0631 expr \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0648\u0625\u062e\u0631\u0627\u062c \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0642\u0627\u0628\u0644\u0629. \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0648\u0627\u0644\u0645\u0642\u0627\u0631\u0646\u0627\u062a \u0648\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0633\u0644\u0633\u0644\u0629. <\/li>\n<li>  \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0644\u0628\u062d\u062b \u0639\u0646 \u0623\u0646\u0645\u0627\u0637 \u0645\u062d\u062f\u062f\u0629 \u0641\u064a \u0627\u0644\u0646\u0635\u060c \u0648\u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0635\u062d\u0629 \u0625\u062f\u062e\u0627\u0644 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u060c \u0648\u062d\u062a\u0649 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0646\u0635 \u0627\u0633\u062a\u0646\u0627\u062f\u064b\u0627 \u0625\u0644\u0649 \u0623\u0646\u0645\u0627\u0637 \u0645\u062d\u062f\u062f\u0629. <\/li>\n<li>  \u064a\u0645\u0643\u0646 \u0644\u0623\u0645\u0631 expr \u0623\u064a\u0636\u064b\u0627 \u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0648\u0638\u0627\u0626\u0641 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0645\u062b\u0644 \u0627\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0627\u0644\u0637\u0648\u0644 \u0648\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0648\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0627\u0644\u0641\u0631\u0639\u064a\u0629. <\/li>\n<\/ul>\n<\/div><\/div>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":0,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":0,\"nbrPlacementsScanned\":0,\"ruleCount\":200,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":240} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":1,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":1,\"nbrPlacementsScanned\":0,\"ruleCount\":200,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":0} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":false,\"currentRuleCount\":200,\"actualCount\":0,\"hasActualCountMetThreshold\":null,\"countRemainingForInjection\":null,\"nextBlockCount\":null,\"hasCountRemainingForInjectionMetThreshold\":null} --><\/section>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":1,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":1,\"nbrPlacementsScanned\":1,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":0} --><br \/>\n<!-- No winning ad found for zone: below first paragraph! --><\/p>\n<p>  \u0647\u0644 \u062a\u0631\u064a\u062f \u0625\u062c\u0631\u0627\u0621 \u0628\u0639\u0636 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0627\u0644\u0628\u0633\u064a\u0637\u0629 \u0641\u064a Linux\u061f \u0645\u0627 \u0639\u0644\u064a\u0643 \u0633\u0648\u0649 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr. \u064a\u0645\u0643\u0646 \u0644\u0647\u0630\u0627 \u0627\u0644\u0623\u0645\u0631 \u0625\u062c\u0631\u0627\u0621 \u0639\u0645\u0644\u064a\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629\u060c \u0645\u062b\u0644 \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0648\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0627\u0644\u0641\u0631\u0639\u064a\u0629 \u0648\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0648\u0627\u0644\u0645\u0632\u064a\u062f. \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0625\u0636\u0627\u0641\u0629 \u0623\u0648 \u0637\u0631\u062d \u0623\u0648 \u0636\u0631\u0628 \u0623\u0648 \u0642\u0633\u0645\u0629 \u0631\u0642\u0645\u064a\u0646 \u0648\u0627\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0627\u0644\u0625\u062c\u0627\u0628\u0629 \u0643\u0645\u062e\u0631\u062c\u0627\u062a. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":1,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":1,\"nbrPlacementsScanned\":1,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":305} --><br \/>\n<!-- No winning ad found for zone: native in content! --><\/p>\n<h2 id=\"the-expr-command\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D8%A3%D9%85%D8%B1_expr\"><\/span>  \u0627\u0644\u0623\u0645\u0631 expr <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  expr \u0647\u064a \u0623\u062f\u0627\u0629 \u064a\u0645\u0643\u0646\u0647\u0627 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0648\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0627\u0633\u062a\u0646\u0627\u062f\u064b\u0627 \u0625\u0644\u0649 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0642\u062f\u0645\u0647\u0627. \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0625\u062c\u0631\u0627\u0621 \u0639\u0645\u0644\u064a\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629 \u0639\u0644\u0649 \u0627\u0644\u0623\u0639\u062f\u0627\u062f \u0627\u0644\u0635\u062d\u064a\u062d\u0629 \u0648\u0627\u0644\u0633\u0644\u0627\u0633\u0644\u060c \u0645\u062b\u0644 \u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0642\u064a\u0645 \u0623\u0648 \u0627\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0623\u0646\u0645\u0627\u0637 \u0645\u0639\u064a\u0646\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0627\u0644\u0639\u0627\u062f\u064a\u0629. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":1,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":1,\"nbrPlacementsScanned\":1,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":573} --><\/p>\n<p>  \u064a\u0645\u0643\u0646\u0643 \u062a\u0645\u0631\u064a\u0631 \u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0645\u062a\u0639\u062f\u062f\u0629 \u0625\u0644\u0649 expr \u0643\u062d\u062c\u062c\u060c \u0645\u0641\u0635\u0648\u0644\u0629 \u0628\u0645\u0633\u0627\u0641\u0627\u062a. \u0641\u0647\u0648 \u0644\u0627 \u064a\u0642\u0648\u0645 \u0628\u062a\u0642\u064a\u064a\u0645 \u062a\u0639\u0628\u064a\u0631 \u0641\u062d\u0633\u0628\u060c \u0628\u0644 \u064a\u0639\u0631\u0636 \u0623\u064a\u0636\u064b\u0627 \u0627\u0644\u0646\u0627\u062a\u062c \u0627\u0644\u0645\u0642\u0627\u0628\u0644 \u0644\u0647 \u0639\u0644\u0649 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0637\u0631\u0641\u064a\u0629. \u064a\u0639\u0645\u0644 \u0623\u0645\u0631 expr \u0641\u064a \u0643\u0644 \u0645\u0646 \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 Bash \u0648\u0646\u0635\u0648\u0635 shell. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":1,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":1,\"nbrPlacementsScanned\":1,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":812} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":812,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":88,\"nextBlockCount\":244,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1056} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":1,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":1,\"nbrPlacementsScanned\":1,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":1,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<p>  \u064a\u0639\u062f \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0641\u064a\u062f\u064b\u0627 \u0639\u0646\u062f \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0623\u0648 \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u062f\u0648\u0646 \u0645\u063a\u0627\u062f\u0631\u0629 \u0627\u0644\u0645\u062d\u0637\u0629 \u0627\u0644\u0637\u0631\u0641\u064a\u0629. \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u062d\u0631\u064a\u0635\u064b\u0627 \u0628\u0634\u0623\u0646 \u0628\u0646\u0627\u0621 \u0627\u0644\u062c\u0645\u0644\u0629 \u0648\u062a\u0631\u062a\u064a\u0628 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a\u060c \u0648\u0625\u0644\u0627 \u0641\u0633\u0648\u0641 \u064a\u0641\u0634\u0644 \u0627\u0644\u0623\u0645\u0631 \u0648\u064a\u0639\u0631\u0636 \u0631\u0633\u0627\u0644\u0629 \u062e\u0637\u0623. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":156} --><\/p>\n<p>  \u0635\u064a\u063a\u0629 \u0627\u0644\u0623\u0645\u0631 expr \u0647\u064a: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":192} --><\/p>\n<pre><code class=\"hljs \">expr expression<\/code> <\/pre>\n<p>  &#8230; \u062d\u064a\u062b \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u0645\u0632\u064a\u062c \u0645\u0646 \u0627\u0644\u062d\u062c\u062c \u0648\u0627\u0644\u0639\u0648\u0627\u0645\u0644. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u064a\u0642\u0648\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0627\u0644\u0645\u0648\u0636\u062d \u0623\u062f\u0646\u0627\u0647 \u0628\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0628\u064a\u0646 arg1 \u0648arg2 \u0648\u064a\u0639\u0631\u0636 \u0627\u0644\u0646\u062a\u064a\u062c\u0629: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":378} --><\/p>\n<pre><code class=\"hljs \">expr arg1 operator arg2<\/code> <\/pre>\n<p>  \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0627\u0644\u062d\u062c\u062c \u0623\u0631\u0642\u0627\u0645\u064b\u0627 \u0623\u0648 \u0633\u0644\u0627\u0633\u0644\u060c \u062d\u0633\u0628 \u0627\u0644\u0645\u0634\u063a\u0644. \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u0634\u063a\u0644\u0627\u062a \u062d\u0633\u0627\u0628\u064a\u0629 \u0623\u0648 \u0639\u0644\u0627\u0626\u0642\u064a\u0629 \u0623\u0648 \u0645\u062a\u0639\u0644\u0642\u0629 \u0628\u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0623\u0648 \u0645\u0646\u0637\u0642\u064a\u0629. \u0625\u0646\u0647 \u0627\u0644\u0631\u0645\u0632 \u0627\u0644\u0630\u064a \u064a\u062d\u062f\u062f \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u0625\u062c\u0631\u0627\u0624\u0647\u0627. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0623\u0639\u062f\u0627\u062f \u0627\u0644\u0635\u062d\u064a\u062d\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0634\u063a\u0644\u0627\u062a \u0645\u062b\u0644 + \u0648- \u0648* \u0648\/ \u0648%. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":656} --><\/p>\n<p>  \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0633\u0644\u0627\u0633\u0644\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0627\u0644\u0639\u0627\u062f\u064a\u0629 \u0648\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0627\u0644\u0623\u062d\u0631\u0641 \u0644\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0627\u0644\u0645\u0637\u0627\u0628\u0642\u0627\u062a \u0648\u0627\u0644\u0641\u0647\u0631\u0633. \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0642\u0648\u0627\u0633 \u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0648\u0627\u0644\u062e\u0637\u0648\u0637 \u0627\u0644\u0645\u0627\u0626\u0644\u0629 \u0627\u0644\u0639\u0643\u0633\u064a\u0629 \u0644\u062a\u062c\u0646\u0628 \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u062e\u0627\u0635\u0629. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":846} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":846} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":846,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":54,\"nextBlockCount\":270,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1116} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":2,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":2,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":2,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<h2 id=\"expr-command-options\"><span class=\"ez-toc-section\" id=\"%D8%AE%D9%8A%D8%A7%D8%B1%D8%A7%D8%AA_%D8%A3%D9%85%D8%B1_expr\"><\/span>  \u062e\u064a\u0627\u0631\u0627\u062a \u0623\u0645\u0631 expr <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0639\u0644\u0649 \u0627\u0644\u0631\u063a\u0645 \u0645\u0646 \u0623\u0646 \u0628\u0631\u0646\u0627\u0645\u062c expr \u0644\u0627 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u062e\u064a\u0627\u0631\u0627\u062a \u0633\u0637\u0631 \u0623\u0648\u0627\u0645\u0631 \u062a\u0642\u0644\u064a\u062f\u064a\u0629\u060c \u0625\u0644\u0627 \u0623\u0646\u0647 \u064a\u0648\u0641\u0631 \u0645\u0634\u063a\u0644\u0627\u062a \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a \u0644\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0648\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0648\u0627\u0644\u0645\u0642\u0627\u0631\u0646\u0629. \u0639\u0644\u0627\u0648\u0629 \u0639\u0644\u0649 \u0630\u0644\u0643\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 <strong>&#8211;\u064a\u0633\u0627\u0639\u062f<\/strong> \u062e\u064a\u0627\u0631 \u0644\u0625\u0638\u0647\u0627\u0631 \u0635\u0641\u062d\u0629 \u062a\u0639\u0644\u064a\u0645\u0627\u062a expr\u060c \u0648\u0627\u0644\u062a\u064a \u062a\u0634\u0631\u062d \u062a\u0631\u0643\u064a\u0628\u0647\u0627 \u0648\u0645\u064a\u0632\u0627\u062a\u0647\u0627 \u0648\u0623\u0645\u062b\u0644\u0629 \u0639\u0644\u064a\u0647\u0627: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":216} --><\/p>\n<pre><code class=\"hljs sql\">expr <\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"759\" height=\"540\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u064a\u0646\u0643\u0633 \u0645\u0639 \u062a\u0648\u062b\u064a\u0642 \u0627\u0644\u0623\u0645\u0631 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=759%2C540&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":456} --><\/p>\n<p>  \u0644\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0625\u0635\u062f\u0627\u0631 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u0642\u0645 \u0628\u062a\u0634\u063a\u064a\u0644: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":497} --><\/p>\n<pre><code class=\"hljs sql\">expr <\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"753\" height=\"176\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u0631\u0642\u0645 \u0627\u0644\u0625\u0635\u062f\u0627\u0631 \u0648\u062a\u0641\u0627\u0635\u064a\u0644 \u0627\u0644\u0645\u0637\u0648\u0631 \u0644\u0623\u0645\u0631 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030231_512_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030231_512_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=753%2C176&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":737} --><\/p>\n<p>  \u064a\u0639\u0631\u0636 \u0647\u0630\u0627 \u0627\u0644\u062e\u064a\u0627\u0631 \u0631\u0642\u0645 \u0627\u0644\u0625\u0635\u062f\u0627\u0631\u060c \u0648\u0627\u0644\u0631\u0645\u0632 \u0627\u0644\u0645\u0635\u062f\u0631\u060c \u0648\u0627\u0644\u062a\u0631\u062e\u064a\u0635\u060c \u0648\u0645\u0624\u0644\u0641 expr. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":821} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":821} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":821,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":79,\"nextBlockCount\":334,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1155} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":3,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":3,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":4,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":4,\"nbrPlacementsScanned\":3,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<h2 id=\"performing-arithmetic-operations-with-expr\"><span class=\"ez-toc-section\" id=\"%D8%A5%D8%AC%D8%B1%D8%A7%D8%A1_%D8%A7%D9%84%D8%B9%D9%85%D9%84%D9%8A%D8%A7%D8%AA_%D8%A7%D9%84%D8%AD%D8%B3%D8%A7%D8%A8%D9%8A%D8%A9_%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_expr\"><\/span>  \u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0641\u064a \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629\u060c \u0627\u0643\u062a\u0628 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u062a\u0628\u0648\u0639\u064b\u0627 \u0628\u0645\u0633\u0627\u0641\u0629. \u062b\u0645 \u0627\u0643\u062a\u0628 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0627\u0644\u0630\u064a \u062a\u0631\u064a\u062f \u062a\u0642\u064a\u064a\u0645\u0647. \u0647\u0630\u0627 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0639\u0628\u0627\u0631\u0629 \u0639\u0646 \u0645\u0632\u064a\u062c \u0645\u0646 \u0627\u0644\u0623\u0639\u062f\u0627\u062f \u0627\u0644\u0635\u062d\u064a\u062d\u0629 \u0648\u0627\u0644\u0645\u0639\u0627\u0645\u0644\u0627\u062a \u0645\u062b\u0644 + \u0648- \u0648* \u0648\/. \u062a\u0623\u0643\u062f \u0645\u0646 \u0641\u0635\u0644 \u0643\u0644 \u0631\u0645\u0632 (\u0639\u062f\u062f \u0635\u062d\u064a\u062d \u0623\u0648 \u0639\u0627\u0645\u0644) \u0641\u064a \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0628\u0645\u0633\u0627\u0641\u0629. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":4,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":4,\"nbrPlacementsScanned\":4,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":255} --><\/p>\n<p>  \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0625\u0630\u0627 \u0643\u0646\u062a \u062a\u0631\u064a\u062f \u0645\u0639\u0631\u0641\u0629 \u0645\u062c\u0645\u0648\u0639 15 \u064812 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0643\u062a\u0627\u0628\u0629: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":4,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":4,\"nbrPlacementsScanned\":4,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":341} --><\/p>\n<pre><code class=\"hljs \">expr 15 + 12<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"741\" height=\"67\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u064f\u0638\u0647\u0631 \u0625\u0636\u0627\u0641\u0629 \u0645\u062a\u063a\u064a\u0631\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030231_906_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030231_906_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=741%2C67&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":4,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":4,\"nbrPlacementsScanned\":4,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":581} --><\/p>\n<p>  \u0648\u0628\u0627\u0644\u0645\u062b\u0644\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0644\u0625\u062c\u0631\u0627\u0621 \u0639\u0645\u0644\u064a\u0627\u062a \u062d\u0633\u0627\u0628\u064a\u0629 \u0623\u062e\u0631\u0649\u060c \u0645\u062b\u0644 \u0627\u0644\u0637\u0631\u062d \u0648\u0627\u0644\u0636\u0631\u0628 \u0648\u0627\u0644\u0642\u0633\u0645\u0629. \u062f\u0639\u0646\u0627 \u0646\u0642\u064a\u0645 \u0628\u0639\u0636 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":4,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":4,\"nbrPlacementsScanned\":4,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":773} --><\/p>\n<pre><code class=\"hljs xml\">expr 15 - 12<br \/>expr 15 \\* 5<br \/>expr 10 \/ 2<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"751\" height=\"165\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u0639\u0645\u0644\u064a\u0627\u062a \u062d\u0633\u0627\u0628\u064a\u0629 \u0645\u062e\u062a\u0644\u0641\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_920_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_920_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=751%2C165&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":4,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":4,\"nbrPlacementsScanned\":4,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":1013} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":4,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":0} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":false,\"currentRuleCount\":900,\"actualCount\":0,\"hasActualCountMetThreshold\":null,\"countRemainingForInjection\":null,\"nextBlockCount\":null,\"hasCountRemainingForInjectionMetThreshold\":null} --><\/p>\n<p>  \u064a\u062c\u0628 \u0639\u0644\u064a\u0643 \u0627\u0644\u0647\u0631\u0648\u0628 \u0645\u0646 \u0627\u0644\u0636\u0631\u0628 <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":261} --><\/p>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"966\" height=\"143\" loading=\"lazy\" alt=\"\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0634\u0631\u0637\u0629 \u0627\u0644\u0645\u0627\u0626\u0644\u0629 \u0627\u0644\u0639\u0643\u0633\u064a\u0629 (\\) \u0644\u062a\u062c\u0646\u0628 \u062a\u0648\u0633\u0639 \u0627\u0644\u063a\u0644\u0627\u0641. \u0648\u0625\u0644\u0627\u060c \u0641\u0633\u0648\u0641 \u064a\u062d\u0627\u0648\u0644 \u0627\u0644\u063a\u0644\u0627\u0641 \u0645\u0637\u0627\u0628\u0642\u0629 \u0627\u0644\u0639\u0627\u0645\u0644\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_528_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_528_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=966%2C143&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":501} --><\/p>\n<p>  \u0645\u0639 \u0623\u0633\u0645\u0627\u0621 \u0627\u0644\u0645\u0644\u0641\u0627\u062a \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u0627\u0644\u062f\u0644\u064a\u0644 \u0627\u0644\u062d\u0627\u0644\u064a \u0648\u062a\u0645\u0631\u064a\u0631\u0647\u0627 \u0625\u0644\u0649 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u0645\u0645\u0627 \u0633\u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062d\u062f\u0648\u062b \u062e\u0637\u0623. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":615} --><\/p>\n<pre><code class=\"hljs xml\">expr <span class=\"hljs-string\">\"5\"<\/span>\u00a0<span class=\"hljs-string\">\"*\"<\/span>\u00a0<span class=\"hljs-string\">\"3\"<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"753\" height=\"71\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u064a\u0646\u0643\u0633 \u0628\u0647\u0627 \u062e\u0637\u0623 \u0641\u064a \u0628\u0646\u0627\u0621 \u0627\u0644\u062c\u0645\u0644\u0629\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_316_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_316_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=753%2C71&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":855} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":855} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":855,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":45,\"nextBlockCount\":227,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1082} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":5,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":5,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":5,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<h2 id=\"comparing-two-expressions-with-expr\"><span class=\"ez-toc-section\" id=\"%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A3%D9%8A%D8%B6%D9%8B%D8%A7_%D9%85%D9%86%D8%B9_shell_%D9%85%D9%86_%D8%AA%D9%81%D8%B3%D9%8A%D8%B1_%D8%A7%D9%84%D8%A3%D8%AD%D8%B1%D9%81_%D8%B9%D9%86_%D8%B7%D8%B1%D9%8A%D9%82_%D8%A7%D9%82%D8%AA%D8%A8%D8%A7%D8%B3_%D8%A7%D9%84%D9%88%D8%B3%D8%A7%D8%A6%D8%B7_%D9%88%D8%A7%D9%84%D8%B9%D9%88%D8%A7%D9%85%D9%84_%D8%A8%D8%B4%D9%83%D9%84_%D8%B5%D8%AD%D9%8A%D8%AD\"><\/span>  \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0645\u0646\u0639 shell \u0645\u0646 \u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0623\u062d\u0631\u0641 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0627\u0642\u062a\u0628\u0627\u0633 \u0627\u0644\u0648\u0633\u0627\u0626\u0637 \u0648\u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d: <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u0645\u0639 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0648\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u0627\u0642\u062a\u0628\u0627\u0633 \u0644\u0644\u0645\u0634\u063a\u0644\u0627\u062a \u0645\u0639 \u0639\u0644\u0627\u0645\u062a\u064a \u0627\u0642\u062a\u0628\u0627\u0633 \u0645\u0632\u062f\u0648\u062c\u062a\u064a\u0646 <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":182} --><\/p>\n<p>  \u0645\u0642\u0627\u0631\u0646\u0629 \u062a\u0639\u0628\u064a\u0631\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":283} --><\/p>\n<pre><code class=\"hljs \">expr 40 = 50<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure>&lt;img width=&quot;748&quot; height=&quot;75&quot; loading=&quot;lazy&quot; decoding=&quot;async&quot; alt=&quot;\u0644\u0645\u0642\u0627\u0631\u0646\u0629 \u062a\u0639\u0628\u064a\u0631\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0639\u0648\u0627\u0645\u0644 \u0645\u0646\u0637\u0642\u064a\u0629 \u0645\u062b\u0644 = \u0648 \u0648!=. \u0625\u0630\u0627 \u0631\u0623\u064a\u062a \u0646\u0627\u062a\u062c \u0627\u0644\u0623\u0645\u0631 \u064a\u0633\u0627\u0648\u064a \u0648\u0627\u062d\u062f\u064b\u0627\u060c \u0641\u0625\u0646 \u0627\u0644\u0634\u0631\u0637 \u0635\u062d\u064a\u062d\u060c \u0648\u0625\u0644\u0627 \u0641\u0647\u0648 \u062e\u0627\u0637\u0626\u060c \u0648\u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u062a\u064a \u064a\u062a\u0645 \u0625\u0631\u062c\u0627\u0639\u0647\u0627 \u0647\u064a \u0635\u0641\u0631.&#8221; data-img-url=&#8221;https:\/\/static1.howtogeekimages.com\/wordpress\/wp-content\/uploads\/2024\/01\/6-8.png&#8221; src=&#8221;https:\/\/static1.howtogeekimages.com\/wordpress\/wp-content\/uploads\/2024\/01\/6-8.png&#8221; style=&#8221;display:block;height:auto;max-width:100%;&#8221;\/&gt;  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":523} --><\/p>\n<p>  \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0644\u0644\u062a\u062d\u0642\u0642 \u0645\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u062d\u062c\u0629 \u0627\u0644\u0623\u0648\u0644\u0649 \u062a\u0633\u0627\u0648\u064a \u0627\u0644\u062d\u062c\u0629 \u0627\u0644\u062b\u0627\u0646\u064a\u0629\u060c \u0646\u0633\u062a\u062e\u062f\u0645 \u0639\u0627\u0645\u0644 =: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":644} --><\/p>\n<pre><code class=\"hljs xml\">expr 40 \\&lt; 50<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"751\" height=\"70\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0645\u0633\u0627\u0648\u0627\u0629 \u0627\u0644\u0631\u0642\u0645\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_494_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_494_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=751%2C70&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":884} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":884,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":16,\"nextBlockCount\":132,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1016} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":6,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":6,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":6,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<p>  \u0627\u0644\u0622\u0646\u060c \u062f\u0639\u0646\u0627 \u0646\u062a\u062d\u0642\u0642 \u0645\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u062d\u062c\u0629 \u0627\u0644\u0623\u0648\u0644\u0649 \u0623\u0635\u063a\u0631 \u0645\u0646 \u0627\u0644\u062d\u062c\u0629 \u0627\u0644\u0623\u062e\u0631\u0649. \u0644\u0630\u0644\u0643\u060c \u0646\u0633\u062a\u062e\u062f\u0645 \u0639\u0627\u0645\u0644 &lt;: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":116} --><\/p>\n<pre><code class=\"hljs \">expr 45 \\!= 55<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"70\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u0623\u0648\u0627\u0645\u0631 \u0644\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u0623\u0635\u063a\u0631 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u0639\u0627\u0645\u0644 less than\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_277_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030232_277_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C70&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":356} --><\/p>\n<p>  \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u0642\u064a\u0645 \u063a\u064a\u0631 \u0645\u062a\u0633\u0627\u0648\u064a\u0629. \u0644\u0644\u0642\u064a\u0627\u0645 \u0628\u0630\u0644\u0643\u060c \u0645\u0627 \u0639\u0644\u064a\u0643 \u0633\u0648\u0649 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0639\u0627\u0645\u0644 != \u0628\u064a\u0646 \u0642\u064a\u0645\u062a\u064a \u0627\u0644\u0648\u0633\u064a\u0637\u062a\u064a\u0646: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":414} --><\/p>\n<p>  \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u064a\u0646 \u0642\u064a\u0645\u062a\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u0639\u0627\u0645\u0644 not equal to <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":510} --><\/p>\n<section class=\"emaki-custom-block emaki-custom-note\">\n<div class=\"emaki-custom note\" id=\"custom_block_46\">\n<div class=\"custom_block-content note\">\n<p>  \u0647\u0646\u0627\u060c \u064a\u0634\u064a\u0631 \u0627\u0644\u0646\u0627\u062a\u062c 1 \u0625\u0644\u0649 \u0623\u0646 45 \u0644\u0627 \u064a\u0633\u0627\u0648\u064a 55. <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":750} --><\/section>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":750} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":750} --><\/p>\n<h2 id=\"finding-a-string-39-s-length-with-expr\"><span class=\"ez-toc-section\" id=\"%D8%A8%D9%87%D8%B0%D9%87_%D8%A7%D9%84%D8%B7%D8%B1%D9%8A%D9%82%D8%A9%D8%8C_%D9%8A%D9%88%D9%81%D8%B1_%D8%A7%D9%84%D8%A3%D9%85%D8%B1_expr_%D8%B7%D8%B1%D9%8A%D9%82%D8%A9_%D8%A8%D8%B3%D9%8A%D8%B7%D8%A9_%D9%88%D9%81%D8%B9%D8%A7%D9%84%D8%A9_%D9%84%D9%85%D9%82%D8%A7%D8%B1%D9%86%D8%A9_%D8%A7%D9%84%D9%82%D9%8A%D9%85_%D8%A7%D9%84%D8%B9%D8%AF%D8%AF%D9%8A%D8%A9\"><\/span>  \u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629\u060c \u064a\u0648\u0641\u0631 \u0627\u0644\u0623\u0645\u0631 expr \u0637\u0631\u064a\u0642\u0629 \u0628\u0633\u064a\u0637\u0629 \u0648\u0641\u0639\u0627\u0644\u0629 \u0644\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0642\u064a\u0645 \u0627\u0644\u0639\u062f\u062f\u064a\u0629. <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0645\u062b\u0644 \u0627\u0644\u0636\u0631\u0628 <\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":7,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":7,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":931} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":8,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":8,\"nbrPlacementsScanned\":7,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":0} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":false,\"currentRuleCount\":900,\"actualCount\":0,\"hasActualCountMetThreshold\":null,\"countRemainingForInjection\":null,\"nextBlockCount\":null,\"hasCountRemainingForInjectionMetThreshold\":null} --><\/p>\n<p>  \u0627\u0644\u0645\u0634\u063a\u0644\u060c \u064a\u062c\u0628 \u0623\u064a\u0636\u064b\u0627 \u0627\u0644\u0625\u0641\u0644\u0627\u062a \u0645\u0646 \u0627\u0644\u0645\u0634\u063a\u0644\u0627\u062a \u060c \u0648!= \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0634\u0631\u0637\u0629 \u0627\u0644\u0645\u0627\u0626\u0644\u0629 \u0627\u0644\u0639\u0643\u0633\u064a\u0629 (\\). \u0648\u0625\u0644\u0627\u060c \u0641\u0642\u062f \u064a\u062a\u0645 \u062a\u0641\u0633\u064a\u0631\u0647\u0627 \u0643\u0623\u062d\u0631\u0641 \u062e\u0627\u0635\u0629 \u0628\u0648\u0627\u0633\u0637\u0629 shell. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":8,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":8,\"nbrPlacementsScanned\":8,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":88} --><\/p>\n<pre><code class=\"hljs xml\">expr length <span class=\"hljs-string\">'How To Geek'<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"73\" loading=\"lazy\" alt=\"\u0625\u064a\u062c\u0627\u062f \u0637\u0648\u0644 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_847_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_847_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C73&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":8,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":8,\"nbrPlacementsScanned\":8,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":328} --><\/p>\n<p>  \u0644\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0637\u0648\u0644 \u0633\u0644\u0633\u0644\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0637\u0631\u064a\u0642\u0629 length. \u0633\u064a\u0639\u064a\u062f \u0647\u0630\u0627 \u0627\u0644\u0639\u0627\u0645\u0644 \u0639\u062f\u062f \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0627\u0644\u0645\u0639\u0637\u0627\u0629 \u0625\u0644\u0649 \u0627\u0644\u0646\u0627\u062a\u062c. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":8,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":8,\"nbrPlacementsScanned\":8,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":556} --><\/p>\n<pre><code class=\"hljs xml\">expr length <span class=\"hljs-string\">\"<span class=\"hljs-variable\">$(echo 'How To Geek' | tr -d ' ')<\/span>\"<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"751\" height=\"78\" loading=\"lazy\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_253_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_253_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=751%2C78&#038;ssl=1\" style=\"height:auto;max-width:100%\" alt=\"\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":8,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":8,\"nbrPlacementsScanned\":8,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":796} --><\/p>\n<p>  \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u064f\u0638\u0647\u0631 \u0627\u0644\u0637\u0648\u0644 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u0639\u0627\u0645\u0644 \u0627\u0644\u0637\u0648\u0644 <\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":8,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":8,\"nbrPlacementsScanned\":8,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":927} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":8,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":0} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":false,\"currentRuleCount\":900,\"actualCount\":0,\"hasActualCountMetThreshold\":null,\"countRemainingForInjection\":null,\"nextBlockCount\":null,\"hasCountRemainingForInjectionMetThreshold\":null} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":0} --><\/p>\n<h2 id=\"matching-two-strings-with-expr\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D9%86%D8%AA%D9%8A%D8%AC%D8%A9_%D9%87%D9%8A_11_%D9%84%D8%A3%D9%86_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D8%AA%D8%AD%D8%AA%D9%88%D9%8A_%D8%B9%D9%84%D9%89_%D8%AA%D8%B3%D8%B9%D8%A9_%D8%A3%D8%AD%D8%B1%D9%81_%D9%88%D9%85%D8%B3%D8%A7%D9%81%D8%AA%D9%8A%D9%86_%D9%81%D8%A7%D8%B1%D8%BA%D8%AA%D9%8A%D9%86_%D8%A5%D8%B0%D8%A7_%D9%83%D9%86%D8%AA_%D8%AA%D8%B1%D9%8A%D8%AF_%D9%85%D8%B9%D8%B1%D9%81%D8%A9_%D8%B7%D9%88%D9%84_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D8%A8%D8%AF%D9%88%D9%86_%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA_%D9%81%D8%A7%D8%B1%D8%BA%D8%A9%D8%8C_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_%D8%A3%D9%88%D8%A7%D9%85%D8%B1_%D8%A3%D8%AE%D8%B1%D9%89_%D9%85%D8%AB%D9%84_tr_%D8%A3%D9%88_awk_%D9%84%D8%A5%D8%B2%D8%A7%D9%84%D8%AA%D9%87%D8%A7_%D8%A3%D9%88%D9%84%D8%A7%D9%8B_%D8%B9%D9%84%D9%89_%D8%B3%D8%A8%D9%8A%D9%84_%D8%A7%D9%84%D9%85%D8%AB%D8%A7%D9%84\"><\/span>  \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0647\u064a 11 \u0644\u0623\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u062a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u062a\u0633\u0639\u0629 \u0623\u062d\u0631\u0641 \u0648\u0645\u0633\u0627\u0641\u062a\u064a\u0646 \u0641\u0627\u0631\u063a\u062a\u064a\u0646. \u0625\u0630\u0627 \u0643\u0646\u062a \u062a\u0631\u064a\u062f \u0645\u0639\u0631\u0641\u0629 \u0637\u0648\u0644 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0628\u062f\u0648\u0646 \u0645\u0633\u0627\u0641\u0627\u062a \u0641\u0627\u0631\u063a\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0648\u0627\u0645\u0631 \u0623\u062e\u0631\u0649 \u0645\u062b\u0644 tr \u0623\u0648 awk \u0644\u0625\u0632\u0627\u0644\u062a\u0647\u0627 \u0623\u0648\u0644\u0627\u064b. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644: <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u0637\u0648\u0644 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u062f\u0648\u0646 \u062a\u0636\u0645\u064a\u0646 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0627\u0644\u0628\u064a\u0636\u0627\u0621 <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":226} --><\/p>\n<p>  \u0633\u064a\u0643\u0648\u0646 \u0627\u0644\u0646\u0627\u062a\u062c \u0647\u0648 \u062a\u0633\u0639\u0629 \u0644\u0623\u0646 \u0627\u0644\u0623\u0645\u0631 tr \u064a\u062d\u0630\u0641 \u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0642\u0628\u0644 \u062a\u0645\u0631\u064a\u0631\u0647\u0627 \u0625\u0644\u0649 \u0627\u0644\u0623\u0645\u0631 expr length. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":266} --><\/p>\n<pre><code class=\"hljs \">expr string1 : string2<\/code> <\/pre>\n<p>  \u0645\u0637\u0627\u0628\u0642\u0629 \u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":377} --><\/p>\n<p>  \u0625\u062d\u062f\u0649 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u0648\u0641\u0631\u0647\u0627 \u0627\u0644\u0623\u0645\u0631 expr \u0647\u064a \u0645\u0642\u0627\u0631\u0646\u0629 \u0633\u0644\u0633\u0644\u062a\u064a\u0646. \u0644\u0644\u0642\u064a\u0627\u0645 \u0628\u0630\u0644\u0643\u060c \u0627\u0633\u062a\u062e\u062f\u0645 \u0639\u0627\u0645\u0644 \u0627\u0644\u0646\u0642\u0637\u062a\u064a\u0646 (:) \u0645\u0639 \u0627\u0644\u0623\u0645\u0631 expr. \u064a\u0639\u064a\u062f \u0647\u0630\u0627 \u0627\u0644\u0639\u0627\u0645\u0644 \u0639\u062f\u062f \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u062a\u064a \u062a\u062a\u0637\u0627\u0628\u0642 \u0641\u064a \u0628\u062f\u0627\u064a\u0629 \u0627\u0644\u0633\u0644\u0633\u0644\u062a\u064a\u0646. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":486} --><\/p>\n<pre><code class=\"hljs xml\">expr <span class=\"hljs-string\">'HowToGeek'<\/span> : <span class=\"hljs-string\">'HowTo'<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"75\" loading=\"lazy\" alt=\"\u0627\u0644\u0635\u064a\u063a\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0645\u0634\u063a\u0644 \u0647\u064a:\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_865_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_865_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C75&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":726} --><\/p>\n<p>  \u064a\u0642\u0648\u0645 \u0647\u0630\u0627 \u0628\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0648\u0625\u0631\u062c\u0627\u0639 \u0639\u062f\u062f \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u0645\u062a\u0637\u0627\u0628\u0642\u0629 \u0645\u0646 \u0628\u062f\u0627\u064a\u0629 \u0627\u0644\u0633\u0644\u0633\u0644\u0629. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":791} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":791,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":109,\"nextBlockCount\":240,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1031} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":9,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":9,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":9,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<pre><code class=\"hljs xml\">expr <span class=\"hljs-string\">'How To Geek'<\/span> : <span class=\"hljs-string\">'How To Geek'<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"753\" height=\"78\" loading=\"lazy\" alt=\"\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0633\u064a\u0642\u0648\u0645 \u0627\u0644\u0623\u0645\u0631 \u0623\u062f\u0646\u0627\u0647 \u0628\u0625\u062e\u0631\u0627\u062c \u062e\u0645\u0633\u0629 \u0623\u062d\u0631\u0641\u060c \u062d\u064a\u062b \u0623\u0646 \u0643\u0644\u0627 \u0627\u0644\u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0644\u062f\u064a\u0647\u0645\u0627 \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u062e\u0645\u0633\u0629 \u0627\u0644\u0623\u0648\u0644\u0649 \u0627\u0644\u0645\u0634\u062a\u0631\u0643\u0629:\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_942_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_942_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=753%2C78&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":131} --><\/p>\n<p>  \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u064f\u0638\u0647\u0631 \u0645\u0637\u0627\u0628\u0642\u0629 \u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0645\u062e\u062a\u0644\u0641\u062a\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":228} --><\/p>\n<p>  \u0641\u0643\u0631 \u0641\u064a \u0645\u062b\u0627\u0644 \u0622\u062e\u0631\u060c \u062d\u064a\u062b \u062a\u0643\u0648\u0646 \u0633\u0644\u0633\u0644\u062a\u0627\u0646 \u0645\u0639\u0637\u0627\u062a\u0627\u0646 \u0645\u062a\u0645\u0627\u062b\u0644\u062a\u064a\u0646: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":302} --><\/p>\n<pre><code class=\"hljs xml\">expr <span class=\"hljs-string\">'How To Geek'<\/span> : <span class=\"hljs-string\">'Linux'<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"72\" loading=\"lazy\" alt=\"\u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u064f\u0638\u0647\u0631 \u0645\u0637\u0627\u0628\u0642\u0629 \u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0645\u062a\u0645\u0627\u062b\u0644\u062a\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_67_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030233_67_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C72&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":542} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":542} --><\/p>\n<h2 id=\"incrementing-and-decrementing-a-variable-with-expr\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D9%86%D8%AA%D9%8A%D8%AC%D8%A9_%D9%87%D9%8A_11_%D8%AD%D9%8A%D8%AB_%D8%A3%D9%86_%D9%83%D9%84%D8%A7_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%AA%D9%8A%D9%86_%D9%84%D8%AF%D9%8A%D9%87%D9%85%D8%A7_%D8%AC%D9%85%D9%8A%D8%B9_%D8%A7%D9%84%D8%A3%D8%AD%D8%B1%D9%81_%D8%A7%D9%84%D9%85%D8%B4%D8%AA%D8%B1%D9%83%D8%A9%D8%8C_%D8%A8%D9%85%D8%A7_%D9%81%D9%8A_%D8%B0%D9%84%D9%83_%D8%A7%D9%84%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA_%D8%A7%D9%84%D8%A8%D9%8A%D8%B6%D8%A7%D8%A1\"><\/span>  \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0647\u064a 11 \u062d\u064a\u062b \u0623\u0646 \u0643\u0644\u0627 \u0627\u0644\u0633\u0644\u0633\u0644\u062a\u064a\u0646 \u0644\u062f\u064a\u0647\u0645\u0627 \u062c\u0645\u064a\u0639 \u0627\u0644\u0623\u062d\u0631\u0641 \u0627\u0644\u0645\u0634\u062a\u0631\u0643\u0629\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0627\u0644\u0628\u064a\u0636\u0627\u0621. <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0625\u0630\u0627 \u0644\u0645 \u064a\u0643\u0646 \u0647\u0646\u0627\u0643 \u062d\u0631\u0641 \u0645\u0637\u0627\u0628\u0642 \u0645\u0648\u062c\u0648\u062f\u060c \u0641\u0633\u064a\u0643\u0648\u0646 \u0627\u0644\u0646\u0627\u062a\u062c \u0635\u0641\u0631\u064b\u0627: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":701} --><\/p>\n<p>  \u064a\u0639\u0631\u0636 \u0644\u0643 \u0645\u062d\u0637\u0629 Linux \u0643\u064a\u0641\u064a\u0629 \u0645\u0637\u0627\u0628\u0642\u0629 \u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u0633\u0644\u0633\u0644\u0629 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":827} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":827,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":73,\"nextBlockCount\":240,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1067} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":10,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":10,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":10,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<pre><code class=\"hljs php\">a=20<br \/>a=<span class=\"hljs-string\">`expr $a + 1`<\/span><br \/><span class=\"hljs-keyword\">echo<\/span> $a<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"117\" loading=\"lazy\" alt=\"\u0632\u064a\u0627\u062f\u0629 \u0648\u0646\u0642\u0635\u0627\u0646 \u0645\u062a\u063a\u064a\u0631 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_340_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_340_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C117&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":167} --><\/p>\n<p>  \u064a\u0645\u0643\u0646 \u0644\u0623\u0645\u0631 expr \u0623\u064a\u0636\u064b\u0627 \u062a\u0642\u064a\u064a\u0645 \u062a\u0639\u0628\u064a\u0631 \u064a\u0632\u064a\u062f \u0648\u064a\u0646\u0642\u0635 \u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u062a\u063a\u064a\u0631. \u0639\u0644\u0627\u0648\u0629 \u0639\u0644\u0649 \u0630\u0644\u0643\u060c \u064a\u0645\u0643\u0646\u0643 \u062a\u0639\u064a\u064a\u0646 \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0625\u0644\u0649 \u0645\u062a\u063a\u064a\u0631 \u062c\u062f\u064a\u062f. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":280} --><\/p>\n<pre><code class=\"hljs php\">a=20<br \/>a=<span class=\"hljs-string\">`expr $a - 1`<\/span><br \/><span class=\"hljs-keyword\">echo<\/span> $a<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"751\" height=\"122\" loading=\"lazy\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_808_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_808_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=751%2C122&#038;ssl=1\" style=\"height:auto;max-width:100%\" alt=\"\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":520} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":520} --><\/p>\n<p>  \u064a\u0639\u0631\u0636 \u0645\u062d\u0637\u0629 Linux \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0645\u0631 expr \u0644\u0632\u064a\u0627\u062f\u0629 \u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u062a\u063a\u064a\u0631 \u0628\u0645\u0642\u062f\u0627\u0631 1 <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":804} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":804,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":96,\"nextBlockCount\":195,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":999} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":11,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":11,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":12,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":12,\"nbrPlacementsScanned\":11,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<p>  \u0648\u0628\u0627\u0644\u0645\u062b\u0644\u060c \u0644\u062a\u0642\u0644\u064a\u0644 \u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u060c \u0627\u0633\u062a\u062e\u062f\u0645 \u0646\u0641\u0633 \u0628\u0646\u0627\u0621 \u0627\u0644\u062c\u0645\u0644\u0629 \u0648\u0644\u0643\u0646 \u0627\u0633\u062a\u0628\u062f\u0644 \u0639\u0644\u0627\u0645\u0629 \u0627\u0644\u062c\u0645\u0639 \u0628\u0639\u0644\u0627\u0645\u0629 \u0627\u0644\u0637\u0631\u062d: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":12,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":12,\"nbrPlacementsScanned\":12,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":99} --><\/p>\n<pre><code class=\"hljs php\">a=HowToGeek<br \/>b=<span class=\"hljs-string\">`expr substr $a 2 5`<\/span><br \/><span class=\"hljs-keyword\">echo<\/span> $b<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"753\" height=\"120\" loading=\"lazy\" alt=\"\u064a\u0639\u0631\u0636 \u0645\u062d\u0637\u0629 Linux \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0645\u0631 expr \u0644\u062a\u0642\u0644\u064a\u0644 \u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u062a\u063a\u064a\u0631 \u0628\u0645\u0642\u062f\u0627\u0631 1\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_568_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_568_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=753%2C120&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":12,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":12,\"nbrPlacementsScanned\":12,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":339} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":12,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":12,\"nbrPlacementsScanned\":12,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":339} --><\/p>\n<h2 id=\"performing-expr-operations-using-a-shell-script\"><span class=\"ez-toc-section\" id=\"%D9%84%D8%A7%D8%B3%D8%AA%D8%AE%D8%B1%D8%A7%D8%AC_%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D9%81%D8%B1%D8%B9%D9%8A%D8%A9_%D9%85%D9%86_%D8%B3%D9%84%D8%B3%D9%84%D8%A9_%D9%85%D8%B9%D9%8A%D9%86%D8%A9%D8%8C_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_%D8%A7%D9%84%D8%A3%D9%85%D8%B1_expr_%D9%85%D8%B9_%D8%B9%D8%A7%D9%85%D9%84_substr_%D8%A8%D9%87%D8%B0%D9%87_%D8%A7%D9%84%D8%B7%D8%B1%D9%8A%D9%82%D8%A9%D8%8C_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A7%D8%B3%D8%AA%D8%AE%D8%B1%D8%A7%D8%AC_%D9%85%D8%B9%D9%84%D9%88%D9%85%D8%A7%D8%AA_%D9%85%D8%AD%D8%AF%D8%AF%D8%A9_%D9%85%D9%86_%D9%86%D8%B5_%D8%A3%D9%83%D8%A8%D8%B1%D8%8C_%D9%85%D8%AB%D9%84_%D8%A7%D9%84%D8%A7%D8%B3%D9%85_%D8%A3%D9%88_%D8%A7%D9%84%D8%AA%D8%A7%D8%B1%D9%8A%D8%AE_%D8%A3%D9%88_%D8%A3%D9%8A_%D8%B1%D9%85%D8%B2_%D9%8A%D9%85%D9%83%D9%86%D9%83_%D8%A3%D9%8A%D8%B6%D9%8B%D8%A7_%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85_%D9%87%D8%B0%D8%A7_%D8%A7%D9%84%D8%B9%D8%A7%D9%85%D9%84_%D9%84%D8%A5%D8%B2%D8%A7%D9%84%D8%A9_%D8%A7%D9%84%D8%A3%D8%AD%D8%B1%D9%81_%D8%A3%D9%88_%D8%A7%D9%84%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA_%D8%BA%D9%8A%D8%B1_%D8%A7%D9%84%D9%85%D8%B1%D8%BA%D9%88%D8%A8_%D9%81%D9%8A%D9%87%D8%A7_%D9%85%D9%86_%D8%A7%D9%84%D8%B3%D9%84%D8%B3%D9%84%D8%A9\"><\/span>  \u0644\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0633\u0644\u0633\u0644\u0629 \u0641\u0631\u0639\u064a\u0629 \u0645\u0646 \u0633\u0644\u0633\u0644\u0629 \u0645\u0639\u064a\u0646\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u0639\u0627\u0645\u0644 substr. \u0628\u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0645\u062d\u062f\u062f\u0629 \u0645\u0646 \u0646\u0635 \u0623\u0643\u0628\u0631\u060c \u0645\u062b\u0644 \u0627\u0644\u0627\u0633\u0645 \u0623\u0648 \u0627\u0644\u062a\u0627\u0631\u064a\u062e \u0623\u0648 \u0623\u064a \u0631\u0645\u0632. \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0647\u0630\u0627 \u0627\u0644\u0639\u0627\u0645\u0644 \u0644\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u0623\u062d\u0631\u0641 \u0623\u0648 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0645\u0631\u063a\u0648\u0628 \u0641\u064a\u0647\u0627 \u0645\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629. <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0641\u0643\u0631 \u0641\u064a \u0623\u0648\u0627\u0645\u0631 \u0627\u0644\u0645\u062b\u0627\u0644 \u0627\u0644\u062a\u0627\u0644\u064a\u0629\u060c \u062d\u064a\u062b \u064a\u062a\u0645 \u062a\u0647\u064a\u0626\u0629 \u0633\u0644\u0633\u0644\u0629 \u062c\u062f\u064a\u062f\u0629. \u0628\u0639\u062f \u0630\u0644\u0643\u060c \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u0633\u0646\u062d\u0635\u0644 \u0639\u0644\u0649 \u0627\u0644\u0623\u062d\u0631\u0641 \u0645\u0646 \u0627\u0644\u062b\u0627\u0646\u064a \u0625\u0644\u0649 \u0627\u0644\u062e\u0627\u0645\u0633 \u0645\u0646 \u0627\u0644\u0633\u0644\u0633\u0644\u0629 &#8220;HowToGeek&#8221;: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":12,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":12,\"nbrPlacementsScanned\":12,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":614} --><\/p>\n<p>  \u064a\u0639\u0631\u0636 \u0645\u062d\u0637\u0629 Linux \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr \u0645\u0639 \u062e\u064a\u0627\u0631 substr \u0644\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0633\u0644\u0633\u0644\u0629 \u0641\u0631\u0639\u064a\u0629 <\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":12,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":12,\"nbrPlacementsScanned\":12,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":977} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":12,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":false,\"actualCount\":0} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":false,\"currentRuleCount\":900,\"actualCount\":0,\"hasActualCountMetThreshold\":null,\"countRemainingForInjection\":null,\"nextBlockCount\":null,\"hasCountRemainingForInjectionMetThreshold\":null} --><\/p>\n<pre><code class=\"hljs xml\"><span class=\"hljs-keyword\">echo<\/span>\u00a0<span class=\"hljs-string\">\"Enter two numbers\"<\/span><br \/><span class=\"hljs-built_in\">read<\/span> a<br \/><span class=\"hljs-built_in\">read<\/span> b<br \/>sum=`expr $a + $b`<br \/><span class=\"hljs-built_in\">echo<\/span>\u00a0<span class=\"hljs-string\">\"Sum of two numbers is= <span class=\"hljs-variable\">$sum<\/span>\"<\/span><\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"168\" loading=\"lazy\" alt=\"\u062a\u0646\u0641\u064a\u0630 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0646\u0635 \u0628\u0631\u0645\u062c\u064a Shell\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_669_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_669_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C168&#038;ssl=1\" style=\"height:auto;max-width:100%\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":240} --><\/p>\n<p>  \u0644\u0623\u062a\u0645\u062a\u0629 \u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0625\u0646\u0634\u0627\u0621 \u0646\u0635 \u0628\u0631\u0645\u062c\u064a \u0645\u062e\u0635\u0635. \u0627\u0644\u0646\u0635\u0648\u0635 \u0627\u0644\u0628\u0631\u0645\u062c\u064a\u0629 \u0647\u064a \u0623\u062f\u0648\u0627\u062a \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0623\u063a\u0631\u0627\u0636 \u064a\u0645\u0643\u0646\u0647\u0627 \u0645\u0633\u0627\u0639\u062f\u062a\u0643 \u0641\u064a \u0625\u0646\u062c\u0627\u0632 \u0627\u0644\u0645\u0632\u064a\u062f \u0628\u0645\u0648\u0627\u0631\u062f \u0623\u0642\u0644. \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0646\u0635\u0648\u0635 \u0627\u0644\u0628\u0631\u0645\u062c\u064a\u0629\u060c \u064a\u0645\u0643\u0646\u0643 \u0623\u062a\u0645\u062a\u0629 \u0627\u0644\u0645\u0647\u0627\u0645 \u0627\u0644\u0645\u062a\u0643\u0631\u0631\u0629\u060c \u0648\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a\u060c \u0648\u0625\u062c\u0631\u0627\u0621 \u062d\u0633\u0627\u0628\u0627\u062a \u0645\u0639\u0642\u062f\u0629. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":504} --><\/p>\n<p>  \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u064a\u0645\u0643\u0646\u0643 \u0625\u0646\u0634\u0627\u0621 \u0646\u0635 \u0628\u0631\u0645\u062c\u064a \u0644\u0625\u0636\u0627\u0641\u0629 \u0631\u0642\u0645\u064a\u0646 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr. \u0623\u0648\u0644\u0627\u064b\u060c \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0625\u0646\u0634\u0627\u0621 \u0645\u0644\u0641 \u0628\u0627\u0645\u062a\u062f\u0627\u062f &#8220;.sh&#8221;\u060c \u0645\u062b\u0644 &#8220;my_script.sh&#8221;. \u064a\u062e\u0628\u0631 \u0647\u0630\u0627 shell \u0628\u0623\u0646\u0647 \u0645\u0644\u0641 \u0646\u0635 \u0628\u0631\u0645\u062c\u064a. \u0628\u0639\u062f \u0630\u0644\u0643\u060c \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0643\u062a\u0627\u0628\u0629 \u0643\u0648\u062f \u064a\u0645\u0643\u0646\u0647 \u0623\u062e\u0630 \u0631\u0642\u0645\u064a\u0646 \u0643\u0645\u062f\u062e\u0644\u0627\u062a \u0648\u0625\u062e\u0631\u0627\u062c \u0645\u062c\u0645\u0648\u0639\u0647\u0645\u0627. \u0641\u064a\u0645\u0627 \u064a\u0644\u064a \u0646\u0635 \u0628\u0631\u0645\u062c\u064a \u0646\u0645\u0648\u0630\u062c\u064a \u064a\u0645\u0643\u0646\u0647 \u0627\u0644\u0642\u064a\u0627\u0645 \u0628\u0630\u0644\u0643: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":566} --><\/p>\n<pre><code class=\"hljs css\"><span class=\"hljs-selector-tag\">chmod<\/span> +<span class=\"hljs-selector-tag\">x<\/span>\u00a0<span class=\"hljs-selector-tag\">my_script<\/span><span class=\"hljs-selector-class\">.sh<\/span><\/code> <\/pre>\n<p>  \u0645\u0644\u0641 \u0646\u0635\u064a Bash \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0646\u0635 \u0625\u0636\u0627\u0641\u0629 \u0631\u0642\u0645\u064a\u0646 <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":625} --><\/p>\n<pre><code class=\"hljs \">.\/my_script.sh<\/code> <\/pre>\n<div class=\"body-img landscape \">\n<div class=\"responsive-img image-expandable img-article-item\">\n<figure><img data-recalc-dims=\"1\" decoding=\"async\" width=\"752\" height=\"143\" loading=\"lazy\" data-img-url=\"https:\/\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_500_\u0643\u064a\u0641\u064a\u0629-\u062a\u0642\u064a\u064a\u0645-\u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a-\u0641\u064a-\u0644\u064a\u0646\u0643\u0633-\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645-expr.png\" src=\"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/1725030234_500_%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.png?resize=752%2C143&#038;ssl=1\" style=\"height:auto;max-width:100%\" alt=\"\" title=\"\">  <\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":865} --><br \/>\n<!-- Repeatable debug data: {\"isEarlyInjection\":true,\"currentRuleCount\":900,\"actualCount\":865,\"hasActualCountMetThreshold\":true,\"countRemainingForInjection\":35,\"nextBlockCount\":231,\"hasCountRemainingForInjectionMetThreshold\":true,\"nextCount\":1096} --><\/p>\n<p><!-- Repeatable debug data: {\"injection\":\"before\",\"adPosition\":13,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":13,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":900} --><!-- Zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"after\",\"adPosition\":14,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":14,\"nbrPlacementsScanned\":13,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"isEarlyInjection\":true,\"actualCount\":0} --><\/p>\n<p>  \u0628\u0639\u062f \u0630\u0644\u0643\u060c \u0644\u062c\u0639\u0644 \u0647\u0630\u0627 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0646\u0635\u064a \u0642\u0627\u0628\u0644\u0627\u064b \u0644\u0644\u062a\u0646\u0641\u064a\u0630\u060c \u0642\u0645 \u0628\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0623\u0645\u0631 chmod: <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":14,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":14,\"nbrPlacementsScanned\":14,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":196} --><\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":14,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":14,\"nbrPlacementsScanned\":14,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":196} --><\/p>\n<h2 id=\"try-some-alternative-linux-commands\"><span class=\"ez-toc-section\" id=\"%D8%A7%D9%84%D8%A2%D9%86%D8%8C_%D9%82%D9%85_%D8%A8%D8%AA%D9%86%D9%81%D9%8A%D8%B0_%D8%A7%D9%84%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D8%AC_%D8%A7%D9%84%D9%86%D8%B5%D9%8A_%D8%B9%D9%86_%D8%B7%D8%B1%D9%8A%D9%82_%D8%AA%D8%B4%D8%BA%D9%8A%D9%84\"><\/span>  \u0627\u0644\u0622\u0646\u060c \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0646\u0635\u064a \u0639\u0646 \u0637\u0631\u064a\u0642 \u062a\u0634\u063a\u064a\u0644: <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>  \u0645\u062d\u0637\u0629 \u0637\u0631\u0641\u064a\u0629 \u0644\u0646\u0638\u0627\u0645 Linux \u062a\u0639\u0631\u0636 \u062a\u0646\u0641\u064a\u0630 \u0645\u0644\u0641 \u0646\u0635\u064a bash \u0648\u062a\u0639\u0631\u0636 \u0627\u0644\u0646\u0627\u062a\u062c <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":14,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":14,\"nbrPlacementsScanned\":14,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":461} --><\/p>\n<p>  \u0633\u064a\u064f\u0637\u0644\u0628 \u0645\u0646\u0643 \u0625\u062f\u062e\u0627\u0644 \u0631\u0642\u0645\u064a\u0646. \u0628\u0639\u062f \u0625\u062f\u062e\u0627\u0644 \u0627\u0644\u0631\u0642\u0645\u064a\u0646\u060c \u0633\u062a\u0631\u0649 \u0623\u0646 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0646\u0635\u064a \u0633\u064a\u0639\u0631\u0636 \u0645\u062c\u0645\u0648\u0639 \u0627\u0644\u0631\u0642\u0645\u064a\u0646 \u0639\u0644\u0649 \u0627\u0644\u0634\u0627\u0634\u0629. \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u062a\u0639\u062f\u064a\u0644 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c \u0627\u0644\u0646\u0635\u064a \u0644\u0625\u062c\u0631\u0627\u0621 \u0639\u0645\u0644\u064a\u0627\u062a \u0623\u0648 \u0645\u0647\u0627\u0645 \u0623\u062e\u0631\u0649 \u0648\u0641\u0642\u064b\u0627 \u0644\u0627\u062d\u062a\u064a\u0627\u062c\u0627\u062a\u0643. <\/p>\n<p><!-- No repeatable ad for zone: character count repeatable. --><!-- Repeatable debug data: {\"injection\":\"none\",\"adPosition\":14,\"startingPoint\":0,\"skipEvery\":null,\"nbrPlacementFilledEachSkip\":14,\"nbrPlacementsScanned\":14,\"ruleCount\":900,\"degradationStartingPoint\":1,\"stopAds\":null,\"actualCount\":828} -->\n <\/div>\n<p>    \u062c\u0631\u0628 \u0628\u0639\u0636 \u0623\u0648\u0627\u0645\u0631 Linux \u0627\u0644\u0628\u062f\u064a\u0644\u0629\u062a\u0631\u0643\u0632 \u0647\u0630\u0647 \u0627\u0644\u0645\u0642\u0627\u0644\u0629 \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0639\u0644\u0649 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u0648\u0644\u0643\u0646 \u064a\u0645\u0643\u0646\u0643 \u0623\u064a\u0636\u064b\u0627 \u062a\u062c\u0631\u0628\u0629 \u0628\u0639\u0636 \u0627\u0644\u0623\u0648\u0627\u0645\u0631 \u0627\u0644\u0623\u062e\u0631\u0649 \u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629. \u062a\u062a\u0636\u0645\u0646 \u0647\u0630\u0647 \u0627\u0644\u0623\u0648\u0627\u0645\u0631 permite advertise \u0648let \u0648bc. \u064a\u0645\u0643\u0646 \u0644\u062c\u0645\u064a\u0639 \u0623\u062f\u0648\u0627\u062a \u0633\u0637\u0631 \u0627\u0644\u0623\u0648\u0627\u0645\u0631 \u0647\u0630\u0647 \u0625\u062c\u0631\u0627\u0621 \u0639\u0645\u0644\u064a\u0627\u062a \u062d\u0633\u0627\u0628\u064a\u0629 \u0628\u0633\u064a\u0637\u0629 \u0625\u0644\u0649 \u0645\u0639\u0642\u062f\u0629 \u0639\u0644\u0649 \u0642\u064a\u0645 \u0645\u062d\u062f\u062f\u0629.\u064a\u0645\u0643\u0646 \u0644\u0623\u0645\u0631 \u0627\u0644\u062a\u0635\u0631\u064a\u062d \u0625\u0646\u0634\u0627\u0621 \u0648\u062a\u0639\u062f\u064a\u0644 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0648\u0633\u0645\u0627\u062a\u0647\u0627. \u0648\u0639\u0644\u0649 \u0646\u062d\u0648 \u0645\u0645\u0627\u062b\u0644\u060c \u064a\u0642\u0648\u0645 \u0623\u0645\u0631 let \u0628\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0639\u0644\u0649 \u0645\u062a\u063a\u064a\u0631\u0627\u062a shell. \u0648\u0623\u062e\u064a\u0631\u064b\u0627\u060c \u064a\u0639\u062f bc \u0622\u0644\u0629 \u062d\u0627\u0633\u0628\u0629 \u0644\u0633\u0637\u0631 \u0627\u0644\u0623\u0648\u0627\u0645\u0631 \u062a\u062f\u0639\u0645 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0648\u0648\u0638\u0627\u0626\u0641 \u0627\u0644\u0631\u064a\u0627\u0636\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u0646\u0648\u0639\u0629. \u0643\u0645\u0627 \u064a\u0645\u0643\u0646\u0647 \u062a\u062d\u0644\u064a\u0644 \u0644\u063a\u0629 \u0628\u0631\u0645\u062c\u0629 \u0646\u0635\u064a\u0629 \u062a\u062f\u0639\u0645 \u0627\u0644\u062d\u0644\u0642\u0627\u062a \u0648\u0627\u0644\u0639\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0634\u0631\u0637\u064a\u0629 \u0648\u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0627\u0644\u0646\u0642\u0627\u0637 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629 \u064a\u0645\u0643\u0646 \u0644\u0623\u0645\u0631 expr \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0648\u0625\u062e\u0631\u0627\u062c \u0627\u0644\u0642\u064a\u0645\u0629 \u0627\u0644\u0645\u0642\u0627\u0628\u0644\u0629. \u064a\u0645\u0643\u0646\u0643 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062d\u0633\u0627\u0628\u064a\u0629 \u0648\u0627\u0644\u0645\u0642\u0627\u0631\u0646\u0627\u062a \u0648\u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u0633\u0644\u0633\u0644\u0629. \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0645\u0631 expr\u060c \u064a\u0645\u0643\u0646\u0643 \u0627\u0644\u0628\u062d\u062b \u0639\u0646 \u0623\u0646\u0645\u0627\u0637 \u0645\u062d\u062f\u062f\u0629 \u0641\u064a \u0627\u0644\u0646\u0635\u060c \u0648\u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0635\u062d\u0629 \u0625\u062f\u062e\u0627\u0644 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u060c \u0648\u062d\u062a\u0649 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0646\u0635 \u0627\u0633\u062a\u0646\u0627\u062f\u064b\u0627 \u0625\u0644\u0649 \u0623\u0646\u0645\u0627\u0637 \u0645\u062d\u062f\u062f\u0629. \u064a\u0645\u0643\u0646 \u0644\u0623\u0645\u0631 expr \u0623\u064a\u0636\u064b\u0627 \u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0648\u0638\u0627\u0626\u0641 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 \u0645\u062b\u0644 \u0627\u0644\u0639\u062b\u0648\u0631 \u0639\u0644\u0649 \u0627\u0644\u0637\u0648\u0644 \u0648\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0633\u0644\u0627\u0633\u0644 &#8230; <a title=\"\u0643\u064a\u0641\u064a\u0629 \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0641\u064a \u0644\u064a\u0646\u0643\u0633 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr\" class=\"read-more\" href=\"https:\/\/goodwriterz.com\/site\/%d9%83%d9%8a%d9%81%d9%8a%d8%a9-%d8%aa%d9%82%d9%8a%d9%8a%d9%85-%d8%a7%d9%84%d8%aa%d8%b9%d8%a8%d9%8a%d8%b1%d8%a7%d8%aa-%d9%81%d9%8a-%d9%84%d9%8a%d9%86%d9%83%d8%b3-%d8%a8%d8%a7%d8%b3%d8%aa%d8%ae%d8%af\/\" aria-label=\"Read more about \u0643\u064a\u0641\u064a\u0629 \u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631\u0627\u062a \u0641\u064a \u0644\u064a\u0646\u0643\u0633 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 expr\">\u0625\u0642\u0631\u0623 \u0627\u0644\u0645\u0632\u064a\u062f<\/a><\/p>\n","protected":false},"author":1,"featured_media":26842,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[42,43],"class_list":["post-26841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-desktop","tag-linux","tag-linux-macos-terminal"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/goodwriterz.com\/site\/wp-content\/uploads\/2024\/08\/%D9%83%D9%8A%D9%81%D9%8A%D8%A9-%D8%AA%D9%82%D9%8A%D9%8A%D9%85-%D8%A7%D9%84%D8%AA%D8%B9%D8%A8%D9%8A%D8%B1%D8%A7%D8%AA-%D9%81%D9%8A-%D9%84%D9%8A%D9%86%D9%83%D8%B3-%D8%A8%D8%A7%D8%B3%D8%AA%D8%AE%D8%AF%D8%A7%D9%85-expr.jpg?fit=2100%2C1400&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/posts\/26841","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/comments?post=26841"}],"version-history":[{"count":0,"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/posts\/26841\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/media\/26842"}],"wp:attachment":[{"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/media?parent=26841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/categories?post=26841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/goodwriterz.com\/site\/wp-json\/wp\/v2\/tags?post=26841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}