{"id":604,"date":"2025-03-01T16:13:12","date_gmt":"2025-03-01T08:13:12","guid":{"rendered":"https:\/\/www.zhzxs.xyz\/?p=604"},"modified":"2025-03-01T16:13:14","modified_gmt":"2025-03-01T08:13:14","slug":"1740816740","status":"publish","type":"post","link":"https:\/\/www.zhzxs.site\/index.php\/2025\/03\/01\/1740816740\/","title":{"rendered":"Linux Crontab \u5b9a\u65f6\u4efb\u52a1\u8be6\u89e3"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u57fa\u672c\u64cd\u4f5c<\/h2>\n\n\n\n<p><code>cron<\/code> \u662f Linux \u7cfb\u7edf\u4e2d\u7684\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6\u5de5\u5177\uff0c\u53ef\u4ee5\u8ba9\u7528\u6237\u5728\u7279\u5b9a\u65f6\u95f4\u6267\u884c\u67d0\u4e2a\u547d\u4ee4\u6216\u811a\u672c\u3002\u4e0b\u9762\u662f <code>crontab<\/code> \u7684\u57fa\u672c\u64cd\u4f5c\u547d\u4ee4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f16\u8f91\u5f53\u524d\u7528\u6237\u7684\u5b9a\u65f6\u4efb\u52a1<\/strong>\uff1a <code>crontab -e<\/code> \u8be5\u547d\u4ee4\u4f1a\u6253\u5f00\u9ed8\u8ba4\u7f16\u8f91\u5668\uff0c\u5141\u8bb8\u4f60\u6dfb\u52a0\u3001\u4fee\u6539\u5b9a\u65f6\u4efb\u52a1\u3002<\/li>\n\n\n\n<li><strong>\u67e5\u770b\u5f53\u524d\u7528\u6237\u7684\u5b9a\u65f6\u4efb\u52a1<\/strong>\uff1a <code>crontab -l<\/code> \u8be5\u547d\u4ee4\u4f1a\u5217\u51fa\u5f53\u524d\u7528\u6237\u7684\u6240\u6709\u5b9a\u65f6\u4efb\u52a1\u3002<\/li>\n\n\n\n<li><strong>\u5220\u9664\u5f53\u524d\u7528\u6237\u7684\u6240\u6709\u5b9a\u65f6\u4efb\u52a1<\/strong>\uff1a <code>crontab -r<\/code> \u8be5\u547d\u4ee4\u4f1a\u6e05\u7a7a\u5f53\u524d\u7528\u6237\u7684 <code>crontab<\/code>\uff0c\u5220\u9664\u6240\u6709\u5df2\u8bbe\u5b9a\u7684\u4efb\u52a1\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001Crontab \u8bed\u6cd5\u683c\u5f0f<\/h2>\n\n\n\n<p>Crontab \u4efb\u52a1\u7684\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>* * * * * \u547d\u4ee4\n<\/code><\/pre>\n\n\n\n<p>\u5176\u4e2d\uff0c\u6bcf\u4e2a <code>*<\/code> \u4ee3\u8868\u4e0d\u540c\u7684\u65f6\u95f4\u5355\u4f4d\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b57\u6bb5\u4f4d\u7f6e<\/th><th>\u4ee3\u8868\u542b\u4e49<\/th><th>\u53d6\u503c\u8303\u56f4<\/th><\/tr><\/thead><tbody><tr><td>\u7b2c\u4e00\u4e2a <code>*<\/code><\/td><td>\u4e00\u5c0f\u65f6\u5185\u7684\u7b2c\u51e0\u5206\u949f<\/td><td>0-59<\/td><\/tr><tr><td>\u7b2c\u4e8c\u4e2a <code>*<\/code><\/td><td>\u4e00\u5929\u5185\u7684\u7b2c\u51e0\u4e2a\u5c0f\u65f6<\/td><td>0-23<\/td><\/tr><tr><td>\u7b2c\u4e09\u4e2a <code>*<\/code><\/td><td>\u4e00\u4e2a\u6708\u5185\u7684\u7b2c\u51e0\u5929<\/td><td>1-31<\/td><\/tr><tr><td>\u7b2c\u56db\u4e2a <code>*<\/code><\/td><td>\u4e00\u5e74\u5185\u7684\u7b2c\u51e0\u6708<\/td><td>1-12<\/td><\/tr><tr><td>\u7b2c\u4e94\u4e2a <code>*<\/code><\/td><td>\u4e00\u5468\u5185\u7684\u661f\u671f\u51e0<\/td><td>0-7\uff080 \u548c 7 \u90fd\u4ee3\u8868\u661f\u671f\u65e5\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u6ce8\u610f<\/strong>\uff1a <code>*<\/code> \u4ee3\u8868\u4efb\u610f\u65f6\u95f4\u3002\u4f8b\u5982\uff0c\u7b2c\u4e00\u4e2a <code>*<\/code> \u4ee3\u8868\u201c\u6bcf\u5206\u949f\u6267\u884c\u4e00\u6b21\u201d\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u7279\u6b8a\u7b26\u53f7\u7684\u4f7f\u7528<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. <code>,<\/code> \u9017\u53f7\uff08\u5217\u4e3e\u591a\u4e2a\u65f6\u95f4\u70b9\uff09<\/h3>\n\n\n\n<p>\u9017\u53f7\u7528\u4e8e\u6307\u5b9a\u591a\u4e2a\u4e0d\u8fde\u7eed\u7684\u65f6\u95f4\u70b9\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>0 8,12,16 * * * \u547d\u4ee4\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\u6bcf\u5929\u7684 <strong>08:00\u300112:00 \u548c 16:00<\/strong> \u5404\u6267\u884c\u4e00\u6b21 <code>\u547d\u4ee4<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. <code>-<\/code> \u8fde\u5b57\u7b26\uff08\u6307\u5b9a\u8fde\u7eed\u65f6\u95f4\u8303\u56f4\uff09<\/h3>\n\n\n\n<p>\u8fde\u5b57\u7b26\u7528\u4e8e\u5b9a\u4e49\u4e00\u4e2a\u8fde\u7eed\u7684\u65f6\u95f4\u8303\u56f4\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>0 5 * * 1-5 \u547d\u4ee4\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a <strong>\u6bcf\u5468\u4e00\u5230\u5468\u4e94\u7684 05:00 \u6267\u884c <code>\u547d\u4ee4<\/code><\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. <code>*\/n<\/code> \u659c\u6760\uff08\u6307\u5b9a\u65f6\u95f4\u95f4\u9694\uff09<\/h3>\n\n\n\n<p><code>*\/n<\/code> \u7528\u4e8e\u5b9a\u4e49\u201c\u6bcf\u9694 n \u5355\u4f4d\u65f6\u95f4\u6267\u884c\u4e00\u6b21\u201d\u3002\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>*\/10 * * * * \u547d\u4ee4\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a <strong>\u6bcf 10 \u5206\u949f\u6267\u884c\u4e00\u6b21 <code>\u547d\u4ee4<\/code><\/strong>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001Crontab \u793a\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u6bcf\u5929\u51cc\u6668 3 \u70b9\u81ea\u52a8\u5907\u4efd\u6570\u636e\u5e93<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>0 3 * * * mysqldump -u root -p'\u5bc6\u7801' mydb &gt; \/backup\/db_$(date +\\%F).sql\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u6bcf\u5468\u4e00\u81f3\u5468\u4e94\u7684 9:00 \u53d1\u9001\u63d0\u9192\u90ae\u4ef6<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>0 9 * * 1-5 echo \"\u5f00\u59cb\u5de5\u4f5c\u5566\uff01\" | mail -s \"\u5de5\u4f5c\u63d0\u9192\" user@example.com\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u6bcf\u9694 5 \u5206\u949f\u68c0\u67e5 Web \u670d\u52a1\u5668\u72b6\u6001<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>*\/5 * * * * curl -Is http:\/\/yourwebsite.com | head -n 1 | grep 200 || systemctl restart nginx\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u6bcf\u5929 23:00 \u6e05\u7406\u4e34\u65f6\u6587\u4ef6<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>0 23 * * * rm -rf \/tmp\/*\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u4ee5\u4e0a\u5c31\u662f Linux <code>crontab<\/code> \u5b9a\u65f6\u4efb\u52a1\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u57fa\u672c\u64cd\u4f5c cron \u662f Linux \u7cfb\u7edf\u4e2d\u7684\u5b9a\u65f6\u4efb\u52a1\u8c03\u5ea6\u5de5\u5177\uff0c\u53ef\u4ee5\u8ba9\u7528\u6237\u5728\u7279\u5b9a\u65f6\u95f4\u6267\u884c\u67d0\u4e2a\u547d\u4ee4\u6216\u811a\u672c\u3002\u4e0b\u9762 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":96,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[119,118,120],"class_list":["post-604","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2","tag-cron","tag-crontab","tag-120"],"_links":{"self":[{"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/posts\/604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/comments?post=604"}],"version-history":[{"count":1,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/posts\/604\/revisions"}],"predecessor-version":[{"id":605,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/posts\/604\/revisions\/605"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/media\/96"}],"wp:attachment":[{"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/media?parent=604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/categories?post=604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhzxs.site\/index.php\/wp-json\/wp\/v2\/tags?post=604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}