{"id":247,"date":"2017-12-19T03:40:12","date_gmt":"2017-12-19T03:40:12","guid":{"rendered":"http:\/\/www.liutianfeng.com\/?p=247"},"modified":"2017-12-19T10:27:48","modified_gmt":"2017-12-19T10:27:48","slug":"%e5%91%bd%e4%bb%a4%e6%9b%bf%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/www.liutianfeng.com\/?p=247","title":{"rendered":"\u547d\u4ee4\u66ff\u6362"},"content":{"rendered":"<p>\u547d\u4ee4\u66ff\u6362: \u628a\u547d\u4ee4\u4e2d\u67d0\u4e2a\u5b50\u547d\u4ee4\u66ff\u6362\u4e3a\u5176\u6267\u884c\u7ed3\u679c\u7684\u8fc7\u7a0b<\/p>\n<p>\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">1. $(COMMAND)\uff1a # a=$(date); echo $a 2017\u5e74 07\u6708 13\u65e5 \u661f\u671f\u56db 16:03:06 CST 2. \u53cd\u5f15\u53f7\uff1a`COMMAND` # a=`echo hello`; echo $a hello<\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">Example: # echo \"The current directory is $(pwd).\" # touch file-$(date +%F-%H-%M-%S) file-2013-02-28-14-53-31.txt $()\u7684\u4f5c\u7528\u5c31\u662f\u5b9e\u73b0\u547d\u4ee4\u66ff\u6362, \u53ef\u4ee5\u7528\u53cd\u5f15\u53f7``\u6765\u5f15\u7528, \u5373: # touch file-`date +%F-%H-%M-%S`<\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1a<a href=\"https:\/\/www.liutianfeng.com\">liutianfeng.com<\/a> &raquo; <a href=\"https:\/\/www.liutianfeng.com\/?p=247\">\u547d\u4ee4\u66ff\u6362<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>\u547d\u4ee4\u66ff\u6362: \u628a\u547d\u4ee4\u4e2d\u67d0\u4e2a\u5b50\u547d\u4ee4\u66ff\u6362\u4e3a\u5176\u6267\u884c\u7ed3\u679c\u7684\u8fc7\u7a0b \u4e24\u79cd\u65b9\u6cd5\uff1a 1. $(COMMAND)\uff1a # a=$(d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[31],"tags":[],"_links":{"self":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts\/247"}],"collection":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=247"}],"version-history":[{"count":5,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions"}],"predecessor-version":[{"id":269,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts\/247\/revisions\/269"}],"wp:attachment":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=247"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=247"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}