{"id":162315,"date":"2019-11-21T12:00:25","date_gmt":"2019-11-21T04:00:25","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=162315"},"modified":"2019-10-24T09:54:37","modified_gmt":"2019-10-24T01:54:37","slug":"shell-case-statement","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/shell-case-statement.html","title":{"rendered":"Shell case\u8bed\u53e5"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>Shell case\u8bed\u53e5\u4e3a\u591a\u9009\u62e9\u8bed\u53e5\u3002\u53ef\u4ee5\u7528case\u8bed\u53e5\u5339\u914d\u4e00\u4e2a\u503c\u4e0e\u4e00\u4e2a\u6a21\u5f0f\uff0c\u5982\u679c\u5339\u914d\u6210\u529f\uff0c\u6267\u884c\u76f8\u5339\u914d\u7684\u547d\u4ee4\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-162408\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/10\/3-4.png\" alt=\"\" width=\"1080\" height=\"810\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/10\/3-4.png 1080w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/10\/3-4-300x225.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/10\/3-4-768x576.png 768w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2019\/10\/3-4-1024x768.png 1024w\" sizes=\"auto, (max-width: 1080px) 100vw, 1080px\" \/><br \/>\n<strong>case\u8bed\u53e5\u683c\u5f0f\u5982\u4e0b\uff1a<\/strong><\/p>\n<pre>case \u503c in\r\n\u6a21\u5f0f1)\r\ncommand1\r\ncommand2\r\n...\r\ncommandN\r\n;;\r\n\u6a21\u5f0f2\uff09\r\ncommand1\r\ncommand2\r\n...\r\ncommandN\r\n;;\r\nesac<\/pre>\n<p>case\u5de5\u4f5c\u65b9\u5f0f\u5982\u4e0a\u6240\u793a\u3002\u53d6\u503c\u540e\u9762\u5fc5\u987b\u4e3a\u5355\u8bcdin\uff0c\u6bcf\u4e00\u6a21\u5f0f\u5fc5\u987b\u4ee5\u53f3\u62ec\u53f7\u7ed3\u675f\u3002\u53d6\u503c\u53ef\u4ee5\u4e3a\u53d8\u91cf\u6216\u5e38\u6570\u3002\u5339\u914d\u53d1\u73b0\u53d6\u503c\u7b26\u5408\u67d0\u4e00\u6a21\u5f0f\u540e\uff0c\u5176\u95f4\u6240\u6709\u547d\u4ee4\u5f00\u59cb\u6267\u884c\u76f4\u81f3 ;;\u3002<\/p>\n<p>\u53d6\u503c\u5c06\u68c0\u6d4b\u5339\u914d\u7684\u6bcf\u4e00\u4e2a\u6a21\u5f0f\u3002\u4e00\u65e6\u6a21\u5f0f\u5339\u914d\uff0c\u5219\u6267\u884c\u5b8c\u5339\u914d\u6a21\u5f0f\u76f8\u5e94\u547d\u4ee4\u540e\u4e0d\u518d\u7ee7\u7eed\u5176\u4ed6\u6a21\u5f0f\u3002\u5982\u679c\u65e0\u4e00\u5339\u914d\u6a21\u5f0f\uff0c\u4f7f\u7528\u661f\u53f7 * \u6355\u83b7\u8be5\u503c\uff0c\u518d\u6267\u884c\u540e\u9762\u7684\u547d\u4ee4\u3002<\/p>\n<p>\u4e0b\u9762\u7684\u811a\u672c\u63d0\u793a\u8f93\u51651\u52304\uff0c\u4e0e\u6bcf\u4e00\u79cd\u6a21\u5f0f\u8fdb\u884c\u5339\u914d\uff1a<\/p>\n<pre>echo '\u8f93\u5165 1 \u5230 4 \u4e4b\u95f4\u7684\u6570\u5b57:'\r\necho '\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a:'\r\nread aNum\r\ncase $aNum in\r\n1) echo '\u4f60\u9009\u62e9\u4e86 1'\r\n;;\r\n2) echo '\u4f60\u9009\u62e9\u4e86 2'\r\n;;\r\n3) echo '\u4f60\u9009\u62e9\u4e86 3'\r\n;;\r\n4) echo '\u4f60\u9009\u62e9\u4e86 4'\r\n;;\r\n*) echo '\u4f60\u6ca1\u6709\u8f93\u5165 1 \u5230 4 \u4e4b\u95f4\u7684\u6570\u5b57'\r\n;;\r\nesac<\/pre>\n<p>\u8f93\u5165\u4e0d\u540c\u7684\u5185\u5bb9\uff0c\u4f1a\u6709\u4e0d\u540c\u7684\u7ed3\u679c\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>\u8f93\u5165 1 \u5230 4 \u4e4b\u95f4\u7684\u6570\u5b57:\r\n\u4f60\u8f93\u5165\u7684\u6570\u5b57\u4e3a:\r\n3\r\n\u4f60\u9009\u62e9\u4e86 3<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>case\u8bed\u53e5\u683c\u5f0f\u5982\u4e0b\uff1a case \u503c in \u6a21\u5f0f1) command1 command2 &#8230; comman [&hellip;]<\/p>\n","protected":false},"author":321,"featured_media":162410,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-162315","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/162315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/321"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=162315"}],"version-history":[{"count":5,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/162315\/revisions"}],"predecessor-version":[{"id":162411,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/162315\/revisions\/162411"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/162410"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=162315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=162315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=162315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}