{"id":987,"date":"2018-08-28T16:22:24","date_gmt":"2018-08-28T08:22:24","guid":{"rendered":"https:\/\/blog.jsjs.org\/?p=987"},"modified":"2018-08-28T16:22:24","modified_gmt":"2018-08-28T08:22:24","slug":"shell","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=987","title":{"rendered":"shell () {}"},"content":{"rendered":"\n<p>$date\u3000\u3000$date_\u3000\u3000$(date)\u3000\u3000${date}\u3000\u3000\u7684\u4e0d\u540c<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-preformatted\"> 1 [root@XX-X-XXX-02 XXX_XXXX]# cat echoDate.sh\n 2 #!\/bin\/bash\n 3\n 4 date=`date +\"%F_%H%M%S\"`\n 5 fileName=abcd.jar\n 6\n 7 echo ___*___$date_$fileName\n 8 echo ___**___$(date)_$fileName\n 9 echo ___***___${date}_$fileName\n10 echo ___****___${date}_${fileName%.*}\n11 [root@XX-X-XXX-02 XXX_XXXX]# .\/echoDate.sh\n12 ___*___abcd.jar\u3000\u3000\/\/$date $date_ \u6b64\u5904\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u53d8\u91cf\uff0c\u5bfc\u81f4\u53d6\u4e0d\u5230\u503c\n13 ___**___2018\u5e74 07\u6708 10\u65e5 \u661f\u671f\u4e8c 11:56:08 CST_abcd.jar\u3000\u3000\/\/\u5728bash\u4e2d\uff0c<code>$( )<\/code>\u4e0e<code>` `<\/code>\uff08\u53cd\u5f15\u53f7\uff09\u90fd\u662f\u7528\u6765\u4f5c\u547d\u4ee4\u66ff\u6362\u7684\n14 ___***___2018-07-10_115608_abcd.jar\n15 ___****___2018-07-10_115608_abcd\n16 [root@XX-X-XXX-02 XXX_XXXX]# <\/pre>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"javascript:void(0);\"><img decoding=\"async\" src=\"https:\/\/common.cnblogs.com\/images\/copycode.gif\" alt=\"\u590d\u5236\u4ee3\u7801\"\/><\/a><\/figure>\n\n\n\n<p>\u53c2\u8003\uff1a<\/p>\n\n\n\n<h1 class=\"wp-block-heading\"><a href=\"https:\/\/www.cnblogs.com\/chengd\/p\/7803664.html\">Linux\u2014shell\u4e2d$(( ))\u3001$( )\u3001&#8220;\u4e0e${ }\u7684\u533a\u522b<\/a><\/h1>\n","protected":false},"excerpt":{"rendered":"<p>$date\u3000\u3000$date_\u3000\u3000$(date)\u3000\u3000${date}\u3000\u3000\u7684\u4e0d\u540c 1 [root@XX-X-XXX-02 XXX_XXXX]# cat echoDate.sh 2 #!\/bin\/bash 3 4 date=`date +&#8221;%F_%H%M%S&#8221;` 5 fileName=abcd.jar 6 7 echo ___*___$date_$fileName 8 echo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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