{"id":15966,"date":"2024-11-18T15:51:37","date_gmt":"2024-11-18T07:51:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/15966\/"},"modified":"2024-11-18T15:51:37","modified_gmt":"2024-11-18T07:51:37","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8cron%e5%9c%a8linux%e4%b8%8a%e5%ae%89%e6%8e%92%e5%ae%9a%e6%97%b6%e4%bb%bb%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/15966\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Cron\u5728Linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1"},"content":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528cron\u5728linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1<\/p>\n<p>\u5728Linux\u7cfb\u7edf\u4e0a\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Cron\u6765\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\u3002Cron\u662f\u4e00\u4e2a\u4f5c\u4e1a\u8c03\u5ea6\u5de5\u5177\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u5b9a\u671f\u6267\u884c\u4e00\u4e9b\u7279\u5b9a\u7684\u4efb\u52a1\uff0c\u4f8b\u5982\u5907\u4efd\u6587\u4ef6\u3001\u6e05\u7406\u7f13\u5b58\u7b49\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528cron\u5728linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u7b2c\u4e00\u6b65\uff1a\u7f16\u8f91Crontab\u6587\u4ef6<br \/>Crontab\uff08cron table\uff09\u662f\u4e00\u4e2a\u7cfb\u7edf\u8303\u56f4\u5185\u7684\u6587\u4ef6\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u6240\u6709\u7528\u6237\u5b9a\u65f6\u4efb\u52a1\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Cron\u63d0\u4f9b\u7684\u547d\u4ee4\u884c\u5de5\u5177\u6765\u7f16\u8f91Crontab\u6587\u4ef6\u3002<\/p>\n<p>\u6253\u5f00\u7ec8\u7aef\u7a97\u53e3\uff0c\u5e76\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8f91\u5f53\u524d\u7528\u6237\u7684Crontab\u6587\u4ef6\uff1a<\/p>\n<pre>crontab -e<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5982\u679c\u662f\u7b2c\u4e00\u6b21\u7f16\u8f91\u8be5\u6587\u4ef6\uff0c\u7cfb\u7edf\u4f1a\u8981\u6c42\u9009\u62e9\u7f16\u8f91\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u81ea\u5df1\u719f\u6089\u7684\u7f16\u8f91\u5668\uff0c\u4f8b\u5982nano\u6216vim\u3002<\/p>\n<p>\u7b2c\u4e8c\u6b65\uff1a\u6dfb\u52a0\u5b9a\u65f6\u4efb\u52a1<br \/>\u5728\u6253\u5f00\u7684Crontab\u6587\u4ef6\u4e2d\uff0c\u6bcf\u884c\u8868\u793a\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\u3002\u6bcf\u884c\u7684\u683c\u5f0f\u5206\u4e3a\u516d\u4e2a\u5b57\u6bb5\uff1a\u5206\u949f\u3001\u5c0f\u65f6\u3001\u65e5\u671f\u3001\u6708\u4efd\u3001\u661f\u671f\u3001\u547d\u4ee4\u3002\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u6765\u586b\u5199\u8fd9\u4e9b\u5b57\u6bb5\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u7684\u5b9a\u65f6\u4efb\u52a1\uff0c\u6bcf\u5929\u7684\u51cc\u66681\u70b9\u6267\u884c\u4e00\u6b21\u5907\u4efd\u64cd\u4f5c\uff1a<\/p>\n<pre>0 1 * * * \/usr\/bin\/backup_script.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u6ce8\u89e3\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u5b57\u6bb5\u8868\u793a\u5206\u949f\uff0c\u8303\u56f4\u662f0-59\uff1b<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u5b57\u6bb5\u8868\u793a\u5c0f\u65f6\uff0c\u8303\u56f4\u662f0-23\uff1b<\/li>\n<li>\u7b2c\u4e09\u4e2a\u5b57\u6bb5\u8868\u793a\u65e5\u671f\uff0c\u8303\u56f4\u662f1-31\uff1b<\/li>\n<li>\u7b2c\u56db\u4e2a\u5b57\u6bb5\u8868\u793a\u6708\u4efd\uff0c\u8303\u56f4\u662f1-12\uff1b<\/li>\n<li>\u7b2c\u4e94\u4e2a\u5b57\u6bb5\u8868\u793a\u661f\u671f\uff0c\u8303\u56f4\u662f0-7\uff1b<\/li>\n<li>\u6700\u540e\u4e00\u4e2a\u5b57\u6bb5\u662f\u5b9e\u9645\u9700\u8981\u6267\u884c\u7684\u547d\u4ee4\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u6211\u4eec\u9700\u8981\u5728\u7279\u5b9a\u7684\u65f6\u95f4\u6bb5\u6267\u884c\u4efb\u52a1\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u901a\u914d\u7b26&#8221;*\/n&#8221;\u6765\u4ee3\u66ff\u5177\u4f53\u7684\u6570\u503c\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u793a\u4f8b\u5c06\u5728\u6bcf\u969410\u5206\u949f\u6267\u884c\u4e00\u6b21\u4efb\u52a1\uff1a<\/p>\n<pre>*\/10 * * * * \/usr\/bin\/task_script.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728Crontab\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6dfb\u52a0\u591a\u4e2a\u5b9a\u65f6\u4efb\u52a1\uff0c\u6bcf\u4e2a\u4efb\u52a1\u5360\u636e\u4e00\u884c\u3002<\/p>\n<p>\u7b2c\u4e09\u6b65\uff1a\u4fdd\u5b58\u5e76\u9000\u51fa<br \/>\u5728\u7f16\u8f91\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5feb\u6377\u952e &#8220;Ctrl + X&#8221;\uff0c\u7136\u540e\u9009\u62e9 &#8220;Y&#8221; \u6765\u4fdd\u5b58\u4fee\u6539\u3002<\/p>\n<p>\u7b2c\u56db\u6b65\uff1a\u67e5\u770b\u5b9a\u65f6\u4efb\u52a1<br \/>\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u67e5\u770b\u5f53\u524d\u7528\u6237\u7684\u5b9a\u65f6\u4efb\u52a1\u5217\u8868\uff1a<\/p>\n<pre>crontab -l<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u4f1a\u663e\u793a\u5f53\u524d\u7528\u6237\u7684\u6240\u6709\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<p>\u9274\u4e8e\u7cfb\u7edfCrontab\u6587\u4ef6\u4e5f\u7528\u4e8e\u5b89\u6392\u7cfb\u7edf\u7ea7\u4efb\u52a1\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6765\u67e5\u770b\u7cfb\u7edf\u8303\u56f4\u5185\u7684\u5b9a\u65f6\u4efb\u52a1\u5217\u8868\uff1a<\/p>\n<pre>sudo cat \/etc\/crontab<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u8fd9\u4e2a\u6587\u4ef6\u4e2d\uff0c\u4f60\u5c06\u627e\u5230\u6240\u6709\u7528\u6237\u7684\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<p>\u6700\u540e\uff0c\u4e3a\u4e86\u786e\u4fddCron\u670d\u52a1\u5df2\u7ecf\u542f\u52a8\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u68c0\u67e5\u5b83\u7684\u72b6\u6001\uff1a<\/p>\n<pre>sudo service cron status<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee3\u7801\u793a\u4f8b<br \/>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u63d0\u4f9b\u4e24\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\u6765\u6f14\u793a\u5982\u4f55\u4f7f\u7528cron\u5728linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\u3002<\/p>\n<p>\u793a\u4f8b1\uff1a\u6bcf\u5929\u65e9\u4e0a6\u70b9\u81ea\u52a8\u53d1\u9001\u65e5\u5fd7\u6587\u4ef6<\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a &#8220;send_log.sh&#8221; \u7684\u6587\u4ef6\uff0c\u5e76\u5c06\u4ee5\u4e0b\u4ee3\u7801\u590d\u5236\u5230\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre>#!\/bin\/bash\n\n# \u8fd9\u662f\u4e00\u4e2a\u6a21\u62df\u53d1\u9001\u65e5\u5fd7\u6587\u4ef6\u7684\u811a\u672c\necho \"Sending log file: \/var\/log\/app.log\"\n# actual send log command<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u7136\u540e\uff0c\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8f91\u5b9a\u65f6\u4efb\u52a1\uff1a<\/p>\n<pre>crontab -e<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u6253\u5f00\u7684Crontab\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre>0 6 * * * \/path\/to\/send_log.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/p>\n<p>\u793a\u4f8b2\uff1a\u6bcf\u5468\u4e94\u4e0b\u53483\u70b9\u6e05\u7406\u7f13\u5b58\u6587\u4ef6<\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a &#8220;cleanup_cache.sh&#8221; \u7684\u6587\u4ef6\uff0c\u5e76\u5c06\u4ee5\u4e0b\u4ee3\u7801\u590d\u5236\u5230\u6587\u4ef6\u4e2d\uff1a<\/p>\n<pre>#!\/bin\/bash\n\n# \u8fd9\u662f\u4e00\u4e2a\u6a21\u62df\u6e05\u7406\u7f13\u5b58\u6587\u4ef6\u7684\u811a\u672c\necho \"Cleaning up cache files: \/var\/cache\/*\"\n# actual cleanup command<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8f91\u5b9a\u65f6\u4efb\u52a1\uff1a<\/p>\n<pre>crontab -e<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236    \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5728\u6253\u5f00\u7684Crontab\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff1a<\/p>\n<pre>0 15 * * 5 \/path\/to\/cleanup_cache.sh<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4fdd\u5b58\u5e76\u9000\u51fa\u6587\u4ef6\u3002<\/p>\n<p>\u603b\u7ed3<br \/>\u901a\u8fc7\u4f7f\u7528Cron\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u65b9\u4fbf\u5730\u5728Linux\u7cfb\u7edf\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u7f16\u8f91Crontab\u6587\u4ef6\uff0c\u7136\u540e\u6dfb\u52a0\u6211\u4eec\u60f3\u8981\u5b9a\u65f6\u6267\u884c\u7684\u547d\u4ee4\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u901a\u914d\u7b26\u6765\u8bbe\u7f6e\u7279\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\uff0c\u4e5f\u53ef\u4ee5\u6dfb\u52a0\u591a\u4e2a\u5b9a\u65f6\u4efb\u52a1\u3002\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u547d\u4ee4\u6765\u67e5\u770b\u5f53\u524d\u7528\u6237\u6216\u7cfb\u7edf\u8303\u56f4\u5185\u7684\u5b9a\u65f6\u4efb\u52a1\u5217\u8868\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528Cron\u5728Linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528cron\u5728linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1 \u5728Linux\u7cfb\u7edf\u4e0a\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Cron\u6765\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\u3002Cron\u662f\u4e00\u4e2a\u4f5c\u4e1a\u8c03\u5ea6\u5de5\u5177\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u5b9a\u671f\u6267\u884c\u4e00\u4e9b\u7279\u5b9a\u7684\u4efb\u52a1\uff0c\u4f8b\u5982\u5907\u4efd\u6587\u4ef6\u3001\u6e05\u7406\u7f13\u5b58\u7b49\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528cron\u5728linux\u4e0a\u5b89\u6392\u5b9a\u65f6\u4efb\u52a1\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u4ee3\u7801\u793a\u4f8b\u3002 \u7b2c\u4e00\u6b65\uff1a\u7f16\u8f91Crontab\u6587\u4ef6Crontab\uff08cron table\uff09\u662f\u4e00\u4e2a\u7cfb\u7edf\u8303\u56f4\u5185\u7684\u6587\u4ef6\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u6240\u6709\u7528\u6237\u5b9a\u65f6\u4efb\u52a1\u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Cron\u63d0\u4f9b\u7684\u547d\u4ee4\u884c\u5de5\u5177\u6765\u7f16\u8f91Crontab\u6587\u4ef6\u3002 \u6253\u5f00\u7ec8\u7aef\u7a97\u53e3\uff0c\u5e76\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\u6765\u7f16\u8f91\u5f53\u524d\u7528\u6237\u7684Crontab\u6587\u4ef6\uff1a crontab -e \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 \u5982\u679c\u662f\u7b2c\u4e00\u6b21\u7f16\u8f91\u8be5\u6587\u4ef6\uff0c\u7cfb\u7edf\u4f1a\u8981\u6c42\u9009\u62e9\u7f16\u8f91\u5668\uff0c\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u81ea\u5df1\u719f\u6089\u7684\u7f16\u8f91\u5668\uff0c\u4f8b\u5982nano\u6216vim\u3002 \u7b2c\u4e8c\u6b65\uff1a\u6dfb\u52a0\u5b9a\u65f6\u4efb\u52a1\u5728\u6253\u5f00\u7684Crontab\u6587\u4ef6\u4e2d\uff0c\u6bcf\u884c\u8868\u793a\u4e00\u4e2a\u5b9a\u65f6\u4efb\u52a1\u3002\u6bcf\u884c\u7684\u683c\u5f0f\u5206\u4e3a\u516d\u4e2a\u5b57\u6bb5\uff1a\u5206\u949f\u3001\u5c0f\u65f6\u3001\u65e5\u671f\u3001\u6708\u4efd\u3001\u661f\u671f\u3001\u547d\u4ee4\u3002\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u6765\u586b\u5199\u8fd9\u4e9b\u5b57\u6bb5\u3002 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