{"id":235,"date":"2019-03-27T22:46:57","date_gmt":"2019-03-27T14:46:57","guid":{"rendered":"https:\/\/www.aiqinqin.info\/?p=235"},"modified":"2019-03-27T22:57:46","modified_gmt":"2019-03-27T14:57:46","slug":"shell%e8%84%9a%e6%9c%ac%e4%b9%8bif","status":"publish","type":"post","link":"https:\/\/www.aiqinqin.info\/?p=235","title":{"rendered":"SHELL\u811a\u672c\u4e4bif"},"content":{"rendered":"<blockquote><p>\n  if\u8bed\u53e5\u7684\u51e0\u79cd\u5e38\u7528\u65b9\u6cd5\n<\/p><\/blockquote>\n<ul>\n<li>if then fi<\/li>\n<\/ul>\n<pre><code class=\"\">if command\nthen\n    commands\nfi\n<\/code><\/pre>\n<ul>\n<li>if then else fi<\/li>\n<\/ul>\n<pre><code class=\"\">if command\nthen\n    commands\nelse\n    commands\nfi\n<\/code><\/pre>\n<ul>\n<li>if then elif then fi<\/li>\n<\/ul>\n<pre><code class=\"\">if command1\nthen\n    commands\nelif command2\nthen\n    more commands\nfi\n<\/code><\/pre>\n<blockquote><p>\n  PS:<br \/>\n  1.if-then\u8bed\u53e5\u5141\u8bb8\u4f60\u4f7f\u7528\u5e03\u5c14\u903b\u8f91\u6765\u7ec4\u5408\u6d4b\u8bd5\uff0c\u6709\u4e24\u79cd\u5e03\u5c14\u8fd0\u7b97\u7b26\u53ef\u7528:<br \/>\n    [ condition ] &amp;&amp; [ condition2 ]<br \/>\n    [ condition ] || [ condition2 ]<br \/>\n  2.\u53cc\u5706\u62ec\u53f7\u547d\u4ee4\u5141\u8bb8\u4f60\u5c06\u9ad8\u7ea7\u6570\u5b66\u8868\u8fbe\u5f0f\u653e\u5165\u6bd4\u8f83\u4e2d\uff1a<br \/>\n     (( expression ))<br \/>\n  3.\u53cc\u65b9\u62ec\u53f7\u91cc\u7684expression\u4f7f\u7528\u4e86test\u547d\u4ee4\u4e2d\u91c7\u7528\u7684\u6807\u51c6\u5b57\u7b26\u4e32\u8fdb\u884c\u6bd4\u8f83\u3002\u4f46\u4ed6\u63d0\u4f9b\u4e86test\u547d\u4ee4\u672a\u63d0\u4f9b\u7684\u53e6\u4e00\u79cd\u7279\u6027&#8212;-\u6a21\u5f0f\u5339\u914d<br \/>\n    [[ expression ]]\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>if\u8bed\u53e5\u7684\u51e0\u79cd\u5e38\u7528\u65b9\u6cd5 if then fi if command then commands fi if t [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,13],"tags":[],"class_list":["post-235","post","type-post","status-publish","format-standard","hentry","category-linux","category-shell-linux"],"_links":{"self":[{"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=\/wp\/v2\/posts\/235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=235"}],"version-history":[{"count":4,"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=\/wp\/v2\/posts\/235\/revisions"}],"predecessor-version":[{"id":239,"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=\/wp\/v2\/posts\/235\/revisions\/239"}],"wp:attachment":[{"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.aiqinqin.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}