{"id":235,"date":"2021-07-28T13:15:57","date_gmt":"2021-07-28T05:15:57","guid":{"rendered":"http:\/\/egonlin.com\/?p=235"},"modified":"2024-04-28T22:16:36","modified_gmt":"2024-04-28T14:16:36","slug":"%e8%ae%a1%e5%88%92%e4%bb%bb%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=235","title":{"rendered":"\u8ba1\u5212\u4efb\u52a1"},"content":{"rendered":"<h1>crond\u8ba1\u5212\u4efb\u52a1<\/h1>\n<h2>\u4e00 \u5b9a\u65f6\u4efb\u52a1\u4ecb\u7ecd<\/h2>\n<p>\u200b <strong>1\u3001\u4ec0\u4e48\u662f\u5b9a\u65f6\u4efb\u52a1\uff1f<\/strong><\/p>\n<pre><code>    \u5b9a\u65f6+\u4efb\u52a1\uff1a\u6bcf\u5230\u8fbe\u4e00\u4e2a\u65f6\u95f4\u70b9\uff0c\u5c31\u4f1a\u81ea\u52a8\u89e6\u53d1\u6267\u884c\u7684\u6307\u4ee4\u3002\r\n    \u4e3e\u4e2a\u4f8b\u5b50\uff1a\r\n        \u4f60\u7ed9\u624b\u673a\u8bbe\u7f6e\u4e3a\u6bcf\u5929\u56fa\u5b9a\u65e9\u4e0a6\u70b9\u54cd\u94c3\r\n        \u5b9a\u65f6---\u300b\u6bcf\u5929\u65e9\u4e0a6\u70b9\r\n        \u4efb\u52a1---\u300b\u54cd\u94c3<\/code><\/pre>\n<p>\u200b <strong>2\u3001\u4e3a\u4ec0\u4e48\u8981\u7528\u5b9a\u65f6\u4efb\u52a1\uff1f<\/strong><\/p>\n<pre><code>\u65e5\u5e38\u8fd0\u7ef4\u8fc7\u7a0b\u4e2d\u4f1a\u9047\u5230\u5f88\u591a\u5468\u671f\u6027\u91cd\u590d\u6267\u884c\u7684\u4efb\u52a1\uff0c\u6709\u6267\u884c\u8d77\u6765\u8017\u8d39\u7684\u65f6\u95f4\u8fd8\u5f88\u957f\uff0c\u9700\u8981\u6709\u4e00\u79cd\u652f\u6301\u914d\u7f6e\u5b9a\u65f6\u4efb\u52a1\u7684\u8f6f\u4ef6\u6765\u89e3\u653e\u6211\u4eec\r\n\u4f8b\u5982\u8fd9\u4e9b\u4efb\u52a1\uff1a\r\n1\u3001\u5907\u4efd\u6570\u636e\u7684\u811a\u672c\/\u547d\u4ee4\r\n2\u3001\u5b9a\u65f6\u91c7\u96c6\u4e3b\u673a\u76d1\u63a7\u6570\u636e\u7684\u811a\u672c\/\u547d\u4ee4<\/code><\/pre>\n<p>\u200b \u8fd9\u5c31\u662fLinux\u7cfb\u7edf\u7684\u5b9a\u65f6\u4efb\u52a1Crond\uff0c\u8fd9\u76f8\u5f53\u4e8e\u6211\u4eec\u5e73\u65f6\u751f\u6d3b\u4e2d\u7684\u95f9\u949f\u529f\u80fd\uff0c\u6bcf\u5929\u665a\u4e0a\u63d0\u524d\u8bbe\u7f6e\u5b9a\u65f6\uff0c\u65e9\u6668\u6309\u65f6\u53eb\u9192\u4f60\u3002<\/p>\n<p>\u200b <strong>3\u3001\u5982\u4f55\u5728linux\u4e2d\u5b9e\u73b0\u5b9a\u65f6\u4efb\u52a1&#8212;\u300bCrond<\/strong><\/p>\n<pre><code>crond: \u662f\u4e00\u6b3e\u652f\u6301\u914d\u7f6e\u5b9a\u65f6\u4efb\u52a1\u7684\u8f6f\u4ef6\uff0c\u5728\u51e0\u4e4e\u6240\u6709\u7684Linux\u53d1\u884c\u7248\u4e2d\u90fd\u662f\u9884\u5b89\u88c5\u7684\u3002\r\n\u4f60\u53ea\u9700\u8981\u6309\u7167\u5b83\u89c4\u5b9a\u7684\u683c\u5f0f\u5199\u597d\u65f6\u95f4\u70b9+\u5f85\u6267\u884c\u7684\u6307\u4ee4\uff0c\u5c31\u53ef\u4ee5\uff0c\u975e\u5e38\u7b80\u5355\r\n\r\nCrond\u670d\u52a1\u4f1a\u5b9a\u671f\uff08\u9ed8\u8ba4\u6bcf\u5206\u949f\u68c0\u67e5\u4e00\u6b21\uff09\u68c0\u67e5\u7cfb\u7edf\u4e2d\u662f\u5426\u6709\u8981\u6267\u884c\u7684\u4efb\u52a1\u5de5\u4f5c\uff0c\u5982\u679c\u6709\uff0c\r\n\u4fbf\u4f1a\u6839\u636e\u5176\u9884\u5148\u8bbe\u5b9a\u7684\u5b9a\u65f6\u4efb\u52a1\u89c4\u5219\u81ea\u52a8\u6267\u884c\u8be5\u5b9a\u65f6\u4efb\u52a1\u5de5\u4f5c<\/code><\/pre>\n<p>\u200b <strong>4\u3001crond\u65e5\u5fd7\u6587\u4ef6<\/strong><\/p>\n<pre><code>\/var\/log\/cron<\/code><\/pre>\n<p>\u200b <strong>5\u3001 crond\u91cc\u914d\u7f6e\u7684\u5b9a\u65f6\u4efb\u52a1\u52062\u7c7b\u3002<\/strong><\/p>\n<pre><code>Crontab\u5b9a\u65f6\u4efb\u52a1\u4e00\u822c\u53ef\u4ee5\u5206\u4e3a\u4e24\u79cd\u4e3b\u8981\u7c7b\u578b\uff1a\u7528\u6237crontab\u4efb\u52a1\u548c\u7cfb\u7edfcrontab\u4efb\u52a1\u3002\r\n1\u3001\u7528\u6237\u7ea7\u5b9a\u65f6\u4efb\u52a1\r\n\uff081\uff09\u901a\u5e38\u7531\u7528\u6237\u81ea\u5df1\u7ef4\u62a4\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u5f53\u7136\u4e5f\u53ef\u4ee5\u7ef4\u62a4\r\n\uff082\uff09\u5b9a\u65f6\u4efb\u52a1\u7684\u914d\u7f6e\u6700\u7ec8\u90fd\u4f1a\u8bb0\u5f55\u5230\u6587\u4ef6\u4e2d\uff0c\u7528\u6237\u7ea7\u7684\u5b9a\u65f6\u4efb\u52a1\u6587\u4ef6\u4f4d\u4e8e\/var\/spool\/cron\/\u4e0b\uff0c\u6587\u4ef6\u540d\u662f\u7528\u6237\u540d\u3002\r\n\uff083\uff09\u7528\u6237\u53ef\u4ee5\u4f7f\u7528 crontab -e \u547d\u4ee4\u6765\u7f16\u8f91\u81ea\u5df1\u7684\u5b9a\u65f6\u4efb\u52a1\u6587\u4ef6\uff0c\u4f7f\u7528 crontab -l \u547d\u4ee4\u6765\u5217\u51fa\u81ea\u5df1\u7684\u4efb\u52a1\u3002\r\n\r\n2\u3001\u7cfb\u7edf\u7ea7\u5b9a\u65f6\u4efb\u52a1\r\n\uff081\uff09\u53ea\u6709\u7cfb\u7edf\u7ba1\u7406\u5458\u53ef\u4ee5\u7f16\u8f91\u3002\r\n\uff082\uff09\u7cfb\u7edf\u7ea7\u5b9a\u65f6\u4efb\u52a1\u6587\u4ef6\u4f4d\u4e8e\/etc\u76ee\u5f55\u4e0b\uff0c\u6587\u4ef6\u540d\u6709crontab\u3001cron.d\/\u3001cron.daily\/\u3001cron.hourly\/\u3001cron.monthly\/\u53cacron.weekly\/\u3002\r\n\/etc\/crontab\uff1a\u8fd9\u662f\u4e3bcrontab\u6587\u4ef6\uff0c\u5305\u542b\u4e86\u7cfb\u7edf\u4efb\u52a1\u8868\uff0c\u4ee5\u53ca\u5728\u9884\u8bbe\u65f6\u95f4\u6267\u884c\u7684\u5de5\u4f5c\u3002\r\n\/etc\/cron.d\/\uff1a\u6b64\u76ee\u5f55\u5b58\u653e\u4efb\u4f55\u60f3\u88abcron\u5b88\u62a4\u8fdb\u7a0b\u6267\u884c\u7684\u4efb\u52a1\u3002\r\n\/etc\/cron.daily\/\uff1a\u6b64\u76ee\u5f55\u4e0b\u5b58\u653e\u7684\u4efb\u52a1\u811a\u672c\u4f1a\u88ab\u7cfb\u7edf\u5b89\u6392\u5728\u6bcf\u5929\u51cc\u6668\u6267\u884c\u3002\r\n\/etc\/cron.hourly\/\uff1a\u6b64\u76ee\u5f55\u4e0b\u5b58\u653e\u7684\u4efb\u52a1\u811a\u672c\u4f1a\u88ab\u7cfb\u7edf\u5b89\u6392\u6bcf\u5c0f\u65f6\u6267\u884c\u4e00\u6b21\u3002\r\n\/etc\/cron.monthly\/\uff1a\u6b64\u76ee\u5f55\u4e0b\u5b58\u653e\u7684\u4efb\u52a1\u811a\u672c\u4f1a\u88ab\u7cfb\u7edf\u5b89\u6392\u5728\u6bcf\u6708\u7684\u67d0\u4e00\u5929\u6267\u884c\u3002\r\n\/etc\/cron.weekly\/\uff1a\u6b64\u76ee\u5f55\u4e0b\u7684\u4efb\u52a1\u811a\u672c\u4f1a\u88ab\u7cfb\u7edf\u5b89\u6392\u5728\u6bcf\u5468\u7684\u67d0\u4e00\u5929\u6267\u884c\u3002\r\n\r\n\u7cfb\u7edf\u7ea7\u5b9a\u65f6\u4efb\u52a1\u4e3b\u8981\u7528\u4e8e\u5982\uff1a\u4e34\u65f6\u6587\u4ef6\u6e05\u7406\u4f8b\/tmp\u548c\/var\/tmp\u7b49\u3001\u7cfb\u7edf\u4fe1\u606f\u91c7\u96c6\u3001\u65e5\u5fd7\u6587\u4ef6\u5207\u5272\u7b49\u573a\u666f\r\n\u7528\u6237\u7ea7\u5b9a\u65f6\u4efb\u52a1\u4e3b\u8981\u7528\u4e8e\u5982\uff1a\u5b9a\u65f6\u5411\u4e92\u8054\u7f51\u540c\u6b65\u65f6\u95f4\u3001\u5b9a\u65f6\u5907\u4efd\u7cfb\u7edf\u914d\u7f6e\u6587\u4ef6\u3001\u5b9a\u65f6\u5907\u4efd\u6570\u636e\u5e93\u7684\u6570\u636e\u7b49\u573a\u666f<\/code><\/pre>\n<h2>\u4e8c \u5b9a\u65f6\u4efb\u52a1\u7ba1\u7406<\/h2>\n<h3>2.1 \u7cfb\u7edf\u7ea7\u8ba1\u5212\u4efb\u52a1\uff08<span style=\"background-color: #ff0000;\">\u5fc5\u987b\u6307\u5b9a\u7528\u6237\u540d<\/span>\uff09<\/h3>\n<p>\u5b9a\u4e49\u65b9\u5f0f\u4e00\uff1a\u7f16\u8f91\u6587\u4ef6\/etc\/crontab\uff08<span style=\"background-color: #ff0000;\">\u5fc5\u987b\u6307\u5b9a\u7528\u6237\u540d<\/span>\uff09<\/p>\n<pre><code class=\"language-python\">[root@localhost ~]# vim \/etc\/crontab \r\n[root@localhost ~]# cat \/etc\/crontab \r\nSHELL=\/bin\/bash\r\nPATH=\/sbin:\/bin:\/usr\/sbin:\/usr\/bin\r\nMAILTO=root\r\n\r\n# For details see man 4 crontabs\r\n\r\n# Example of job definition:\r\n# .---------------- minute (0 - 59)\r\n# |  .------------- hour (0 - 23)\r\n# |  |  .---------- day of month (1 - 31)\r\n# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...\r\n# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat\r\n# |  |  |  |  |\r\n# *  *  *  *  * <span style=\"background-color: #ff0000;\">user-name<\/span>  command to be executed\r\n\u5206\u949f\r\n\u5c0f\u65f6\r\n\u65e5\r\n\u6708\r\n\u5468\r\n* * * * * <strong><span style=\"background-color: #ff0000;\">egon<\/span><\/strong> echo \"$(date) \u6267\u884c\u62c9\" &gt;&gt; \/tmp\/system_run.log<\/code><\/pre>\n<p>\u5b9a\u4e49\u65b9\u5f0f\u4e8c\uff1a\u628a\u811a\u672c\u653e\u5230\u8be5\u76ee\u5f55\u4e0b\uff0c<span style=\"background-color: #ff0000;\"><strong>\u6ce8\u610f\u8981\u7ed9\u811a\u672cx\u6743\u9650: chmod +x<\/strong><\/span><\/p>\n<pre><code class=\"language-python\">\/etc\/cron.hourly\/ # \u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u6bcf\u4e2a\u5c0f\u65f6\u8fd0\u884c\u8fd9\u4e2a\u76ee\u5f55\u91cc\u7684\u5185\u5bb9\r\n\r\n\/etc\/cron.daily\/ # \u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u6bcf\u5929\u8fd0\u884c\u8fd9\u4e2a\u76ee\u5f55\u91cc\u7684\u5185\u5bb9\r\n\r\n\/etc\/cron.weekly\/ # \u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u6bcf\u5468\u8fd0\u884c\u8fd9\u4e2a\u76ee\u5f55\u91cc\u7684\u5185\u5bb9\r\n\r\n\/etc\/cron.monthly\/ # \u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u6bcf\u6708\u8fd0\u884c\u8fd9\u4e2a\u76ee\u5f55\u91cc\u7684\u5185\u5bb9<\/code><\/pre>\n<h3>2.2 \u7528\u6237\u7ea7\u8ba1\u5212\u4efb\u52a1<\/h3>\n<pre><code class=\"language-python\">[root@localhost ~]# crontab -e                  # \u521b\u5efa\u8ba1\u5212\u4efb\u52a1\r\n* * * * * echo `date` &gt;&gt; \/tmp\/a.log\r\n[root@localhost ~]# crontab -l                  # \u67e5\u770b\u8ba1\u5212\u4efb\u52a1\r\n* * * * * echo `date` &gt;&gt; \/tmp\/a.log\r\n[root@localhost ~]# ls \/var\/spool\/cron\/\r\nroot\r\n[root@localhost ~]# cat \/var\/spool\/cron\/root  # \u90fd\u662f\u5199\u5728\u8fd9\u91cc\u5462\r\n* * * * * echo `date` &gt;&gt; \/tmp\/a.log\r\n[root@localhost ~]# tail \/var\/log\/cron          # \u67e5\u770b\u65e5\u5fd7\r\n[root@localhost ~]# crontab -u egon -e\r\n\r\n# \/etc\/cron.deny \u662f\u5b9a\u65f6\u4efb\u52a1\u7684\u9ed1\u540d\u5355,\u4f7f\u7528root\u5c06\u9700\u8981\u62d2\u7edd\u7684\u7528\u6237\u52a0\u5165\/etc\/cron.deny\r\n[root@localhost ~]# echo \"egon\" &gt;&gt; \/etc\/cron.deny \r\n[root@localhost ~]# su - egon  # \u767b\u9646\u8be5\u666e\u901a\u7528\u6237\uff0c\u65e0\u6cd5\u7f16\u5199\u5b9a\u65f6\u4efb\u52a1\r\n\u4e0a\u4e00\u6b21\u767b\u5f55\uff1a\u56db 8\u6708 13 19:44:10 CST 2020pts\/1 \u4e0a\r\n[egon@localhost ~]$ crontab -e\r\nYou (egon) are not allowed to use this program (crontab)\r\nSee crontab(1) for more information<\/code><\/pre>\n<p>\u4e86\u89e3\u77e5\u8bc6\uff08\u4e0d\u7231\u770b\u4f60\u5c31\u522b\u770b\uff0c\u7701\u4e8b\uff09<\/p>\n<pre><code>\u5f53\/etc\/cron.allow\u548c\/etc\/cron.deny\u4e24\u4e2a\u6587\u4ef6\u540c\u65f6\u5b58\u5728\u65f6\uff0c\u7cfb\u7edf\u9996\u5148\u68c0\u67e5\/etc\/cron.allow\u6587\u4ef6\u3002\r\n\u5982\u679c\u4f60\u7684\u7528\u6237\u540d\u5728\/etc\/cron.allow\u6587\u4ef6\u4e2d\uff0c\u4f60\u5c31\u53ef\u4ee5\u4f7f\u7528cron\u914d\u7f6e\u5b9a\u65f6\u4efb\u52a1\u3002\r\n\u5982\u679c\u4f60\u7684\u7528\u6237\u540d\u4e0d\u5728\/etc\/cron.allow\u6587\u4ef6\u4e2d\uff0c\u7cfb\u7edf\u5c06\u4e0d\u4f1a\u518d\u68c0\u67e5\/etc\/cron.deny\u6587\u4ef6\uff0c\u56e0\u6b64\u4f60\u5c06\u65e0\u6cd5\u4f7f\u7528cron\u3002\r\n\u603b\u7684\u6765\u8bf4\uff0c\/etc\/cron.allow\u6587\u4ef6\u5177\u6709\u4f18\u5148\u7ea7\uff0c\u4e14\u53ea\u8981\u4f60\u7684\u7528\u6237\u540d\u5728\u8be5\u6587\u4ef6\u4e2d\uff0c\u65e0\u8bba\/etc\/cron.deny\u7684\u5185\u5bb9\u5982\u4f55\uff0c\r\n\u4f60\u90fd\u5c06\u83b7\u5f97\u8bbf\u95eecron\u7684\u6743\u9650\u3002\u5982\u679c\u4f60\u6ca1\u6709\u5728\/etc\/cron.allow\u6587\u4ef6\u4e2d\u627e\u5230\u4f60\u7684\u7528\u6237\u540d\uff0c\r\n\u5373\u4f7f\u4f60\u7684\u7528\u6237\u540d\u4e5f\u6ca1\u6709\u5728\/etc\/cron.deny\u6587\u4ef6\u4e2d\uff0c\u4f60\u4e5f\u5c06\u4e0d\u80fd\u591f\u8bbf\u95eecron\u3002\r\n\u6240\u4ee5\uff0c\u5728\u8fd9\u4e24\u4e2a\u6587\u4ef6\u540c\u65f6\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\uff0c\u60f3\u8981\u6388\u6743\u67d0\u4e2a\u7528\u6237\u4f7f\u7528cron\uff0c\u4f60\u5e94\u5728\/etc\/cron.allow\u6587\u4ef6\u4e2d\u6dfb\u52a0\u8be5\u7528\u6237\u7684\u7528\u6237\u540d\u3002\r\n\u76f8\u53cd\uff0c\u5982\u679c\u4f60\u60f3\u963b\u6b62\u67d0\u4e2a\u7528\u6237\u8bbf\u95eecron, \u4f60\u5e94\u786e\u4fdd\u8be5\u7528\u6237\u7684\u7528\u6237\u540d\u65e2\u4e0d\u5728\/etc\/cron.allow\u6587\u4ef6\u4e2d\uff0c\u4e5f\u5728\/etc\/cron.deny\u6587\u4ef6\u4e2d\u3002<\/code><\/pre>\n<h3>2.3 \u8ba1\u5212\u4efb\u52a1\u8bed\u6cd5\u683c\u5f0f<\/h3>\n<p>crond\u662f\u6309\u7167\u5206\u949f\u8fdb\u884c\u8ba1\u7b97\u7684,\u4e0d\u652f\u6301\u79d2<br \/>\ncrontab\u7684\u65f6\u95f4\u8303\u56f4\u53ef\u4ee5\u53c2\u8003\/etc\/crontab\u4e2d\u7684\u6ce8\u91ca\uff0c\u4f8b\u59820\u62167\u4ee3\u8868\u5468\u65e5<\/p>\n<pre><code class=\"language-python\">* \u8868\u793a\u4efb\u610f\u65f6\u95f4\r\n\r\n- \u8868\u793a\u4e00\u4e2a\u65f6\u95f4\u8303\u56f4\u6bb5, \u5982\u5c0f\u65f6\u8bbe\u7f6e\u4e3a\uff1a5-7\uff0c\u5219\u8868\u793a\u4ece5\u70b9\u52307\u70b9\r\n\r\n, \u8868\u793a\u5206\u9694\u65f6\u6bb5, \u4f8b\u5982\u65e5\u8bbe\u7f6e\u4e3a6,0,4\uff0c\u5219\u8868\u793a\u5468\u516d\u3001\u5468\u5929\u3001\u5468\u56db\r\n\r\n\/10 \u8868\u793a\u6bcf\u9694n\u5355\u4f4d\u65f6\u95f4, \u5982\u5206\u652f\u8bbe\u7f6e\u4e3a*\/10\uff0c\u5219\u8868\u793a\u6bcf\u969410\u5206\u949f\r\n\r\n<code>  \u6b64\u5916\u5f3a\u8c03\u4ee5\u4e0b\u51e0\u70b9\uff1a\r\n\uff081\uff09cron \u5b88\u62a4\u8fdb\u7a0b\u6bcf\u5206\u949f\u90fd\u4f1a\u81ea\u52a8\u68c0\u67e5 \/etc\/crontab \u6587\u4ef6\u3001etc\/cron.d\/ \u7b49\u76ee\u5f55\u4e2d\u7684\u6539\u53d8\u3002\u5982\u679c\u53d1\u73b0\u4e86\u6539\u53d8\uff0c\u5b83\u4eec\u5c31\u4f1a\u88ab\u8f7d\u5165\u5185\u5b58\u3002\u6240\u4ee5\u4f60\u5982\u679c\u4fee\u6539\u4e86\u8ba1\u5212\u4eba\u6587\u5bfc\u81f4\u5176crontab\u6587\u4ef6\u6539\u53d8\u540e\uff0c\u5e76\u4e0d\u9700\u8981\u91cd\u542f\u5b88\u62a4\u8fdb\u7a0b\u3002\r\n\r\n\uff082\uff09crontab\u7684\u7528\u6237\u624b\u518c\u4e2d\u63a8\u8350\u6bcf\u4e00\u4e2a\u547d\u4ee4\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\uff0c\u4f8b\u5982\u8c03\u7528rm\u547d\u4ee4\u65f6\u5199\u4f5c\uff1a\/bin\/rm\uff0c\u8fd9\u662f\u4e3a\u4e86\u9632\u6b62\u7531\u4e8e\u6bcf\u4e00\u4e2a\u7528\u6237\u7684PATH\u73af\u5883\u53d8\u91cf\u4e0d\u540c\u800c\u5bfc\u81f4\u547d\u4ee4\u65e0\u6cd5\u627e\u5230\u7684\u9519\u8bef\u3002\r\n\r\n\uff083\uff09\u7f16\u5199\u5b9a\u65f6\u4efb\u52a1\u65f6\uff0c\u5148\u5728\u547d\u4ee4\u884c\u4e0a\u9762\u6267\u884c\u4e00\u6b21\uff0c\u67e5\u770b\u662f\u5426\u53ef\u4ee5\u6267\u884c\u6210\u529f\u3002\r\n\r\n\uff084\uff09\u628a\u5b9a\u65f6\u4efb\u52a1\u6267\u884c\u7684\u7ed3\u679c\u5b9a\u5411\u5230\u7a7a&amp;&gt;\/dev\/null\uff0c\u5982\u679c\u4e0d\u5b9a\u5411\u5230\u7a7a\u7684\u8bdd\uff0c\u90ae\u4ef6\u670d\u52a1postfix\u5f00\u542f\u65f6\uff0c\u7cfb\u7edf\u4f1a\u4e00\u76f4\u53d1\u9001\u90ae\u4ef6\u4fe1\u606f\u65e5\u79ef\u6708\u7d2f\u4f1a\u767d\u767d\u8017\u8d39\u78c1\u76d8\u7a7a\u95f4<\/code><\/code><\/pre>\n<p><strong>\u4e86\u89e3\u5b9a\u65f6\u4efb\u52a1crontab\u7684\u7f16\u5199\u89c4\u8303\u3002<\/strong><\/p>\n<pre><code class=\"language-python\">* * * * *   #\u6bcf\u5206\u949f\u6267\u884c\u4e00\u6b21\r\n*\/1 * * * * #\u6bcf\u5206\u949f\u90fd\u6267\u884c\u4e00\u6b21\r\n\r\n*\/3 * * * *   #\u6bcf\u96943\u949f\u6267\u884c\u4e00\u6b21\r\n*\/10 02 * * * #\u6bcf\u5929\u51cc\u66682\u70b9\uff0c\u6bcf\u969410\u5206\u949f\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 * * * #\u6bcf\u5929\u7684\u51cc\u66682\u70b9\u6574\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 1 * * #\u6bcf\u6708\u76841\u65e5\u7684\u51cc\u66682\u70b9\u6574\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 14 2 * #\u6bcf\u5e74\u76842\u670814\u65e5\u51cc\u66682\u70b9\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 * * 7 #\u6bcf\u5468\u5929\u7684\u51cc\u66682\u70b9\u6574\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 * 6 5 #\u6bcf\u5e74\u76846\u6708\u4efd\u6574\u4e2a\u6708\u4e2d\u3001\u6bcf\u5230\u5468\u4e94\u51cc\u66682\u70b9\u5c31\u4f1a\u6267\u884c\u4e00\u6b21\r\n\r\n\"\u65e5\u671f\u7a7f\u523a\"\u95ee\u9898\uff1a\u5f53\u65e5\u671f\u5b57\u6bb5\u548c\u661f\u671f\u5b57\u6bb5\u90fd\u88ab\u7279\u5b9a\u7684\u503c\u6240\u6307\u5b9a\u65f6\uff0c\u90a3\u4e48\u6ee1\u8db3\u5176\u4e2d\u4efb\u610f\u4e00\u4e2a\u5b57\u6bb5\u7684\u6761\u4ef6\uff0c\u4efb\u52a1\u5c31\u4f1a\u88ab\u6267\u884c\r\n00 02 14 * 7 #\u6bcf\u670814\u65e5\u6216\u6bcf\u5468\u65e5\u7684\u51cc\u66682\u70b9\u90fd\u6267\u884c\r\n00 02 14 2 7  #\u6bcf\u5e74\u76842\u670814\u65e5\u6216\u6bcf\u5e742\u6708\u7684\u5468\u5929\u7684\u51cc\u66682\u70b9\u6267\u884c\r\n\r\n00 00 14 2 * #\u6bcf\u5e742\u670814\u65e5\u7684\u51cc\u666800:00\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 * 1,5,8 * #\u6bcf\u5e74\u76841\u6708\u30015\u6708\u30018\u6708\u7684\u6bcf\u5929\u51cc\u66682\u70b9\u90fd\u4f1a\u6267\u884c\u4e00\u6b21\r\n\r\n00 02 1-8 * * #\u6bcf\u67081\u53f7\u52308\u53f7\u51cc\u66682\u70b9\u90fd\u4f1a\u6267\u884c\u4e00\u6b21\r\n\r\n00 21 * * * #\u6bcf\u5929\u665a\u4e0a21:00\u6267\u884c\u4e00\u6b21\r\n\r\n45 4 1,10,22 * * #\u6bcf\u67081\u300110\u300122\u65e5\u76844:45\u6267\u884c\u4e00\u6b21\r\n\r\n45 4 1-10 * * #\u6bcf\u67081\u523010\u65e5\u76844:45\u6267\u884c\u4e00\u6b21\r\n\r\n3,15 8-11 *\/2 * * #\u6bcf\u9694\u4e24\u5929\u7684\u4e0a\u53488\u70b9\u523011\u70b9\u7684\u7b2c3\u548c\u7b2c15\u5206\u949f\u6267\u884c\r\n\r\n0 23-7\/2 * * * #\u665a\u4e0a11\u70b9\u5230\u65e9\u4e0a7\u70b9\u4e4b\u95f4\uff0c\u6bcf\u9694\u4e24\u5c0f\u65f6\u6267\u884c\r\n\r\n15 21 * * 1-5 #\u5468\u4e00\u5230\u5468\u4e94\u6bcf\u5929\u665a\u4e0a21:15\u6267\u884c<\/code><\/pre>\n<h3>2.4 \u793a\u4f8b<\/h3>\n<p>\u793a\u4f8b1<\/p>\n<pre><code class=\"language-python\">[root@localhost ~]# cd \/test\/\r\n[root@localhost test]# chmod o+x *\r\n[root@localhost test]# cat 1.sh \r\n#!\/bin\/bash \r\n\r\necho \"111\" &gt;&gt; \/tmp\/access.log\r\n[root@localhost test]# cat 2.sh \r\n#!\/bin\/bash \r\n\r\necho \"222\" &gt;&gt; \/tmp\/access.log\r\n[root@localhost test]# cat 3.sh \r\n#!\/bin\/bash \r\n\r\necho \"333\" &gt;&gt; \/tmp\/access.log\r\n[root@localhost test]# \r\n[root@localhost test]# \r\n[root@localhost test]# \r\n[root@localhost test]# vim \/etc\/crontab \r\n[root@localhost ~]# cat \/etc\/crontab \r\n\u3002\u3002\u3002\u3002\u3002\u3002\r\n*  *  *  *  * egon run-parts \/test\r\n\r\n[root@localhost ~]# tail -f \/var\/spool\/mail\/root # \u67e5\u770b\u90ae\u4ef6\r\n[root@localhost ~]# tail -f \/var\/log\/cron  # \u67e5\u770b\u8ba1\u5212\u4efb\u52a1\u6267\u884c\u60c5\u51b5<\/code><\/pre>\n<p>\u793a\u4f8b2\uff1a\u547d\u4ee4\u6700\u597d\u7528\u7edd\u5bf9\u8def\u5f84<\/p>\n<pre><code class=\"language-python\">[root@localhost test]# crontab -e\r\n[root@localhost test]# crontab -l\r\n*  *  *  *  * ntpdate ntp.aliyun.com\r\n\u60a8\u5728 \/var\/spool\/mail\/root \u4e2d\u6709\u90ae\u4ef6\r\n\r\n[root@localhost test]# cat \/var\/spool\/mail\/root  | tail -3\r\n\r\n\/bin\/sh: ntpdate: \u672a\u627e\u5230\u547d\u4ee4\r\n\r\n[root@localhost ~]# crontab -l  # \u91cd\u65b0\u4fee\u6539\r\n* * * * * \/usr\/sbin\/ntpdate ntp.aliyun.com<\/code><\/pre>\n<p>\u6ce8\u610f\uff1a\u5728centos7.9\u4e2d\u9ed8\u8ba4\u5b89\u88c5\u4e86\u90ae\u4ef6\u670d\u52a1postfix\u5e76\u542f\u52a8\uff0c\u5f53\u4f60\u7684\u8ba1\u5212\u4eba\u4e2d\u7684\u547d\u4ee4\u6267\u884c\u5931\u8d25\u540e\uff0c\u90ae\u4ef6\u670d\u52a1\u4f1a\u81ea\u52a8\u53d1\u9001\u90ae\u4ef6\u5230\/var\/spool\/mail\/\u4e0b\u4ee5\u7528\u6237\u540d\u547d\u540d\u7684\u6587\u4ef6\u4e2d\uff0c\u4f60\u53ef\u4ee5\u53bbcat\u67e5\u770b\u62a5\u9519\u4fe1\u606f\u3002<br \/>\n\u5b9a\u65f6\u4efb\u52a1\u7684\u6267\u884c\u6709\u65f6\u5019\u4f1a\u4e0d\u53ef\u907f\u514d\u7684\u51fa\u4e00\u4e9b\u5404\u79cd\u5404\u6837\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u5982\u679c\u6bcf\u6b21\u90fd\u53d1\u9001\u90ae\u4ef6\u5230\/var\/spool\/mail\/\u4e0b\uff0c\u65e5\u79ef\u6708\u7d2f\u4f1a\u8017\u8d39\u8fc7\u591a\u78c1\u76d8\u7a7a\u95f4<br \/>\n\u4f60\u53ef\u4ee5\u5728\u547d\u4ee4\u540e\u52a0&amp;&gt;\/dev\/null\uff0c\u628a\u5b9a\u65f6\u4efb\u52a1\u547d\u4ee4\u6267\u884c\u7684\u7ed3\u679c\u90fd\u4e22\u6389\uff0c\u8fd9\u6837\u5373\u4fbf\u90ae\u4ef6\u670d\u52a1\u5f00\u542f\u7684\u72b6\u6001\u4e5f\u6ca1\u5185\u5bb9\u7ed9\u5b83\u53d1\u9001\u4e86<\/p>\n<pre><code class=\"language-python\">[root@localhost ~]# crontab -l\r\n* * * * * \/usr\/sbin\/ntpdate ntp.aliyun.com &amp;&gt;\/dev\/null<\/code><\/pre>\n<p>\u4e5f\u53ef\u4ee5\u5e72\u8106\u5173\u95ed\u5230\u8be5\u670d\u52a1<\/p>\n<pre><code class=\"language-python\">[root@localhost test]# systemctl stop postfix.service<\/code><\/pre>\n<p><strong>\u793a\u4f8b3\uff1a\u6bcf\u5206\u949f\u628a\u7cfb\u7edf\u65f6\u95f4\u8ffd\u52a0\u5230\u4e00\u4e2a\u6587\u4ef6\u4e2d\uff0c\u4ee52019-06-15_13:54:10\u683c\u5f0f<\/strong><\/p>\n<pre><code class=\"language-python\">[root@localhost ~]# crontab -l\r\n* * * * * \/usr\/bin\/date +\\%F_\\%T &gt;&gt; \/root\/time.txt<\/code><\/pre>\n<p>\u52a1\u5fc5\u6ce8\u610f\u52a0\u4e0a\u8f6c\u4e49\u7b26\u53f7\uff0c\u56e0\u4e3a\u5728\u5b9a\u65f6\u4efb\u52a1\u4e2d\uff0c\u6709\u4e9b\u7279\u6b8a\u7b26\u53f7\u4f1a\u88ab\u8bef\u89e3\uff0c\u4e0d\u8f6c\u4e49\u662f\u65e0\u6cd5\u6267\u884c\u7684\u3002<\/p>\n<p><strong>\u793a\u4f8b4\uff1a\u6bcf\u5929\u51cc\u66683\u70b9\u505a\u4e00\u6b21\u5907\u4efd\uff1f\u5c06\/etc\/\u76ee\u5f55\u8fdb\u884c\u6253\u5305,\u5907\u4efd\u5230\/backup\u4e0b\u9762\uff0c\u4e14\u53ea\u80fd\u4fdd\u7559\u6700\u8fd1\u4e09\u5929\u7684\u6570\u636e\u3002<\/strong><\/p>\n<pre><code class=\"language-python\">[root@localhost ~]# cat \/root\/bak.sh \r\n#!bin\/bash\r\nexport PATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/root\/bin # \u9632\u6b62\u4e0b\u8ff0\u547d\u4ee4\u51fa\u95ee\u9898\r\nmkdir \/backup\r\ncd \/\r\ntar -czf backup\/$(hostname)_$(date +\\%F_\\%T)_etc.tar.gz \/etc   \r\nfind backup -type f -name \"*.tar.gz\" -mtime +3 |xargs rm -rf\r\n[root@localhost ~]# crontab -l\r\n* * * * * \/bin\/bash \/root\/bak.sh &amp;&gt;\/dev\/null<\/code><\/pre>\n<h2>\u4e09 crontab\u4e0d\u6267\u884c\u7684\u95ee\u9898<\/h2>\n<p><strong>\u67e5\u770bcron\u670d\u52a1\u662f\u5426\u8d77\u4f5c\u7528\uff1a<\/strong><\/p>\n<pre><code>  cat \/var\/log\/cron  # \u6bcf\u6267\u884c\u4e00\u6b21\u8ba1\u5212\u4efb\u52a1\u5c31\u4f1a\u8bb0\u5f55\u65e5\u5fd7\u5230\u8be5\u6587\u4ef6\u91cc<\/code><\/pre>\n<pre><code class=\"language-python\">\u7b2c\u4e00\uff0c\u811a\u672c\u4ee3\u7801\u6709\u95ee\u9898\uff0c\u89e3\u51b3\uff1a\u5148\u624b\u52a8\u8c03\u8bd5\u8dd1\u901a\r\n\r\n\u7b2c\u4e8c\uff0c\u6267\u884c\u73af\u5883\u95ee\u9898\uff1a\u624b\u52a8\u6267\u884c\u6210\u529f\u800ccrontab\u4e0d\u80fd\u6267\u884c\u7684\u65f6\u5019\uff0c\u5f88\u53ef\u80fd\u5c31\u662f\u6267\u884c\u73af\u5883\u7684\u95ee\u9898\uff0c\u4f8b\u5982\u76f8\u5173\u8def\u5f84\u7684\u8bbe\u7f6e\u95ee\u9898\uff0c\u53ef\u4ee5\u5728\u4ee3\u7801\u6700\u524d\u9762\u6267\u884c source \/home\/user\/.bash_profile\r\n\r\n\u7b2c\u4e09\uff0c\u7cfb\u7edf\u65f6\u95f4\u4e0d\u6b63\u786e\u3002\u8fd9\u79cd\u95ee\u9898\u6700\u597d\u7406\u89e3\uff0c\u4e5f\u662f\u6bd4\u8f83\u5e38\u89c1\u548c\u9690\u853d\u7684\u95ee\u9898\uff0c\u89e3\u51b3\u65b9\u6848\uff1adate -s ********\r\n\r\n\u7b2c\u56db\uff0c\u5c31\u662f\u6211\u4eec\u7684\u811a\u672c\u662f\u5426\u6709\u53ef\u6267\u884c\u6743\u9650\u3002\u5fc5\u987b\u4fdd\u8bc1\u6267\u884c\u811a\u672c\u7684\u7528\u6237\u6709\u6267\u884c\u6539\u6587\u4ef6\u7684\u6743\u9650\u3002\r\n\r\n\u7b2c\u4e94\uff0ccrontab \u5b88\u62a4\u8fdb\u7a0b\u6b7b\u6389\u4e86\u3002\u8fd9\u79cd\u60c5\u51b5\u662f\u6781\u5c11\u53d1\u751f\u7684\uff0c\u4f46\u4e5f\u4e0d\u6392\u9664\uff0c\u5f53\u6211\u4eec\u5b9e\u5728\u662f\u627e\u4e0d\u5230\u5176\u4ed6\u539f\u56e0\u7684\u65f6\u5019\u53ef\u4ee5\u7528\u3002\u89e3\u51b3\u65b9\u6848\uff1a\u91cd\u542f\u8be5\u8fdb\u7a0b\u3002\r\n\r\n\u7b2c\u516d\uff0ccrontab\u4e0d\u6267\u884c\u7684\u95ee\u9898\u56f0\u6270\u4e86\u597d\u957f\u65f6\u95f4\uff0c\u811a\u672c\u5199\u7684\u90fd\u6b63\u786e\uff0c\u4f46\u662f\u5c31\u662f\u4e0d\u6267\u884c\uff0c\u6700\u7ec8\u89e3\u51b3\u65b9\u6cd5\u5982\u4e0b\uff1a\r\ncrontab -u root \/var\/spool\/cron\/root\r\n\u8fd9\u6837root\u7528\u6237\u7684crontab\u5c31\u751f\u6548\u4e86\r\n[root@localhost ~]# systemctl restart crond\r\n\u91cd\u542f\u4e0b\u670d\u52a1\u5c31\u597d\u4e86\r\n\r\n\u7b2c\u4e03\uff0ccrond\u6ca1\u6709\u542f\u52a8\r\n\r\n\u7b2c\u516b\uff0c\u811a\u672c\u7f16\u7801\u95ee\u9898\uff0c\u811a\u672c\u5728window\u4e0b\u7f16\u5199\uff0c\u4f20\u5230linux\u4e0b\u540e\u62a5\u201c\u9518?!\/bin\/bash\u201d\uff0c\u7528vi\u7f16\u8f91\u5668\u65b0\u5efa\u65b0shell\u811a\u672c\uff0c\u8f93\u5165\u5185\u5bb9\u540e\u4fdd\u5b58\u3002\r\n\r\n\u7b2c\u4e5d\uff1a\u7279\u6b8a\u7b26\u53f7\u65e0\u6cd5\u8bc6\u522b\uff0c\u9700\u8981\u6dfb\u52a0\u8f6c\u4e49\r\n\r\n* * * * * tar czf \/tmp\/`date '+%Y'` \/etc \u8be5\u8ba1\u5212\u4efb\u52a1\u4e2d\u547d\u4ee4\u7684\u6267\u884c\u6d41\u7a0b\u662fcrond-&gt;tar\u547d\u4ee4\uff0c\u800ccrond\u5728\u6267\u884ctar\u547d\u4ee4\u65f6\uff0c\u65e0\u6cd5\u8bc6\u522b\u901a\u914d\u7b26%\u7684\u610f\u601d\uff08shell\u80fd\u8bc6\u522b\uff09\uff0c\u6240\u4ee5\u8be5\u547d\u4ee4\u65e0\u6cd5\u6b63\u5e38\u6267\u884c\r\n\r\n\u89e3\u51b3\u65b9\u6848\u4e00\uff1a\u6dfb\u52a0\u8f6c\u4e49\u7b26\u53f7\r\n* * * * * tar czf \/tmp\/`date '+\\%Y'` \/etc\r\n\r\n\u89e3\u51b3\u65b9\u6848\u4e8c\uff1a\u76f4\u63a5\u5c06\u547d\u4ee4\u6254\u5230\u811a\u672c\u91cc\r\n\u901a\u5e38\u90fd\u4f1a\u628a\u8981\u6267\u884c\u7684\u64cd\u4f5c\u653e\u5230\u6587\u4ef6\u4e2d\uff0c\u7136\u540e\/bin\/bash a.sh\u53bb\u6267\u884c\uff0c* * * * * \/bin\/bash a.sh  \uff0c\u8fd9\u6837\u7684\u6267\u884c\u6d41\u7a0b\u5c31\u53d8\u6210\u4e86crond-&gt;bash shell-&gt;a.sh,\u8fd9\u6837a.sh\u5185\u5373\u4fbf\u662f\u5199%\u53f7\uff0c\u4e5f\u80fd\u88ab\u8bc6\u522b\u51fa\u6765<\/code><\/pre>\n<h2>\u56db \u5b9a\u65f6\u4efb\u52a1\u7ec3\u4e60<\/h2>\n<p>1.\u6bcf\u5206\u949f\u6253\u5370\u4f60\u7684\u540d\u5b57\u5230egon.txt\u4e2d\u3002<\/p>\n<p>2.\u6bcf\u5468\u516d\u7684\u65e9\u4e0a8\u70b9\u523012\u70b9\uff0c\u6267\u884c\/scripts\/test.sh\u811a\u672c\u3002<\/p>\n<p>3.\u6bcf\u4e2a\u6708\u76841\u53f7\uff0c\u6267\u884c\/scripts\/egon.sh\u811a\u672c<\/p>\n<p>4.\u6bcf\u5e74\u768410\u6708\u4efd1\u53f7\u52307\u53f7\uff0c\u6267\u884c\/scripts\/holiday.sh\u811a\u672c<\/p>\n<p>5.\u6bcf\u5929\u76849\u70b9\u548c11\u70b9\uff0c\u6267\u884c\/scripts\/test.sh\u811a\u672c<\/p>\n<h2>\u4e94 \u5b9a\u65f6\u53d1\u90ae\u4ef6<\/h2>\n<h3>5.1 \u53d1\u9001\u90ae\u4ef6\u811a\u672c\u6d4b\u8bd5<\/h3>\n<p>\u914d\u7f6e163\u90ae\u7bb1<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729017112.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729017112.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\n\u5f00\u542fPOP3\/SMTP(\u6ce8\u610f\uff1a\u5f00\u542f\u540e\u7ed9\u4f60\u7684\u6388\u6743\u7801\u5c31\u662f\u5ba2\u6237\u7aef\u7a0b\u5e8f\u7684\u767b\u5f55\u5bc6\u7801\uff0c\u53ea\u663e\u793a\u4e00\u6b21\uff0c\u5982\u679c\u5fd8\u8bb0\u4e86\uff0c\u4f60\u53ea\u80fd\u5173\u95ed\u6389POP3\/SMTP\u7136\u540e\u91cd\u542f\u5f00\u542f\u83b7\u53d6\u65b0\u7684\u624d\u884c)<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729190682.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729190682.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729239640.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729239640.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729386436.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729386436.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\npython2\u53d1\u9001\u90ae\u4ef6\u4ee3\u7801<\/p>\n<pre><code>#coding:utf-8\r\nimport smtplib\r\nfrom email.mime.text import MIMEText\r\nfrom email.header import Header\r\n\r\n# 1\u3001\u9700\u8981\u5b9a\u5236\u7684\u90e8\u5206\r\n# \u53d1\u9001\u65b9\u8d26\u53f7\r\nsender = 'xxx@163.com'\r\n# \u53d1\u9001\u65b9\u6388\u6743\u5bc6\u7801=====&gt;\u8fd9\u91cc\u5c31\u662f\u4f60\u5f00\u542fPOP3\/SMTP\u65f6\u7f51\u6613\u7ed9\u4f60\u7684\u6388\u6743\u7801\r\npassword = 'xxxxxx'\r\n# \u6536\u4ef6\u65b9\u90ae\u7bb1\r\nreceiver = 'xxxx@163.com'\r\n# \u90ae\u4ef6\u6807\u9898\r\nsubject = 'Python SMTP \u6d4b\u8bd5\u90ae\u4ef6'\r\n# \u90ae\u4ef6\u5185\u5bb9\r\nmail_msg = 'Python \u6d4b\u8bd5\u90ae\u4ef6\u53d1\u9001\u3002\u3002\u3002\u3002'\r\n\r\n# 2\u3001\u4ee5\u4e0b\u662f\u56fa\u5b9a\u4ee3\u7801\r\n# \u53d1\u9001\u90ae\u4ef6\u670d\u52a1\u5668\u5730\u5740\r\nsmtp_server = 'smtp.163.com'\r\n# \u4e09\u4e2a\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u4e3a\u6587\u672c\u5185\u5bb9\uff0c\u7b2c\u4e8c\u4e2a plain \u8bbe\u7f6e\u6587\u672c\u683c\u5f0f\uff0chtml \u8bbe\u7f6e\u6587\u672c\u683c\u5f0f\u4e3ahtml\u683c\u5f0f  \u7b2c\u4e09\u4e2a utf-8 \u8bbe\u7f6e\u7f16\u7801\r\nmessage = MIMEText(mail_msg, 'plain', 'utf-8')  # \u53d1\u9001\u5185\u5bb9 \uff08\u6587\u672c\u5185\u5bb9\uff0c\u53d1\u9001\u683c\u5f0f\uff0c\u7f16\u7801\u683c\u5f0f\uff09\r\n# \u53d1\u9001\u5730\u5740\r\nmessage['From'] = sender\r\n# \u63a5\u53d7\u5730\u5740\r\nmessage['To'] = receiver\r\n# \u90ae\u4ef6\u6807\u9898\r\nmessage['Subject'] = Header(subject,'utf-8')\r\ntry:\r\n    print(\"\u53d1\u9001\u90ae\u4ef6\")\r\n    # \u521b\u5efaSMTP\u5bf9\u8c61\r\n    smtp = smtplib.SMTP_SSL(smtp_server)\r\n    smtp.set_debuglevel(1)\r\n    # \u767b\u5f55\u90ae\u7bb1\u8d26\u53f7\r\n    smtp.login(sender, password)\r\n    # \u53d1\u9001\u8d26\u53f7\u4fe1\u606f\r\n    smtp.sendmail(sender, receiver, message.as_string())\r\n    print('success:\u53d1\u9001\u6210\u529f')\r\nexcept smtplib.SMTPException:\r\n    print('error:\u90ae\u4ef6\u53d1\u9001\u5931\u8d25')\r\nfinally:\r\n    # \u5173\u95ed\r\n    smtp.quit()\r\n<\/code><\/pre>\n<p>\u6d4b\u8bd5<br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729761159.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710729761159.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>\u7528\u4e0a\u9762\u7684\u811a\u672c\u5c31\u53ef\u4ee5\uff0c\u8fd9\u91cc\u4e5f\u987a\u4fbf\u8d34\u4e0b 25 \u7aef\u53e3\u90ae\u7bb1\u7684\u53d1\u9001\u65b9\u5f0f<\/p>\n<pre><code>import smtplib\r\nfrom email.mime.text import MIMEText\r\nfrom email.header import Header\r\n\r\n# 1\u3001\u9700\u8981\u4f60\u5b9a\u5236\u7684\u90e8\u5206\r\n# \u53d1\u9001\u65b9\u8d26\u53f7\r\nsender = 'xxx@163.com'\r\n# \u53d1\u9001\u65b9\u6388\u6743\u5bc6\u7801\r\npassword = 'xxxxxx'\r\n# \u6536\u4ef6\u65b9\u90ae\u7bb1\r\nreceiver = 'xxxx@163.com'\r\n# \u90ae\u4ef6\u6807\u9898\r\nsubject = 'Python SMTP \u6d4b\u8bd5\u90ae\u4ef6'\r\n# \u90ae\u4ef6\u5185\u5bb9\r\nmail_msg = 'Python \u6d4b\u8bd5\u90ae\u4ef6\u53d1\u9001\u3002\u3002\u3002\u3002'\r\n\r\n# 2\u3001\u4e0b\u9762\u4ee3\u7801\u90e8\u5206\u4e0d\u7528\u52a8\r\n# \u53d1\u9001\u90ae\u4ef6\u670d\u52a1\u5668\u5730\u5740\r\nsmtp_server = 'smtp.163.com'\r\n# \u4e09\u4e2a\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u4e3a\u6587\u672c\u5185\u5bb9\uff0c\u7b2c\u4e8c\u4e2a plain \u8bbe\u7f6e\u6587\u672c\u683c\u5f0f\uff0chtml \u8bbe\u7f6e\u6587\u672c\u683c\u5f0f\u4e3ahtml\u683c\u5f0f  \u7b2c\u4e09\u4e2a utf-8 \u8bbe\u7f6e\u7f16\u7801\r\nmessage = MIMEText(mail_msg, 'plain', 'utf-8')  # \u53d1\u9001\u5185\u5bb9 \uff08\u6587\u672c\u5185\u5bb9\uff0c\u53d1\u9001\u683c\u5f0f\uff0c\u7f16\u7801\u683c\u5f0f\uff09\r\n# \u53d1\u9001\u5730\u5740\r\nmessage['From'] = sender\r\n# \u63a5\u53d7\u5730\u5740\r\nmessage['To'] = receiver\r\n# \u90ae\u4ef6\u6807\u9898\r\nmessage['Subject'] = Header(subject,'utf-8')\r\ntry:\r\n    print(\"\u53d1\u9001\u90ae\u4ef6\")\r\n    # \u521b\u5efaSMTP\u5bf9\u8c61\r\n    smtp = smtplib.SMTP()\r\n    smtp = stmp.connect(smtp_server , 25)\r\n    smtp.set_debuglevel(1)\r\n    # \u767b\u5f55\u90ae\u7bb1\u8d26\u53f7\r\n    smtp.login(sender, password)\r\n    # \u53d1\u9001\u8d26\u53f7\u4fe1\u606f\r\n    smtp.sendmail(sender, receiver, message.as_string())\r\n    print('success:\u53d1\u9001\u6210\u529f')\r\nexcept smtplib.SMTPException:\r\n    print('error:\u90ae\u4ef6\u53d1\u9001\u5931\u8d25')\r\nfinally:\r\n    # \u5173\u95ed\r\n    smtp.quit()<\/code><\/pre>\n<h3>5.2 \u8ba1\u5212\u4efb\u52a1\u76d1\u63a7\u7cfb\u7edf\u72b6\u6001\u53d1\u9001\u62a5\u8b66\u90ae\u4ef6<\/h3>\n<p>1\u3001\u6211\u4eec\u628a\u4e0a\u8ff0\u4ee3\u7801\u6539\u9020\u6210\u4e00\u4e2a\u53ef\u4ee5\u53d1\u9001\u90ae\u4ef6\u7684\u5de5\u5177<br \/>\n\uff081\uff09\u8bf4\u660e<\/p>\n<pre><code>\u6539\u9020\u8d77\u6765\u975e\u5e38\u7b80\u5355\r\n\uff081\uff09\u5728\u6587\u4ef6\u5934\u58f0\u660e\u89e3\u91ca\u5668\r\n\u53ef\u4ee5\u5728\u547d\u4ee4\u884c\u76f4\u63a5\u8fd9\u4e48\u7528\r\n    \/usr\/bin\/mail.py \u90ae\u4ef6\u6807\u9898 \u90ae\u4ef6\u5185\u5bb9\r\n\u800c\u4e0d\u662f\u8fd9\u4e48\u7528\r\n    python \/usr\/bin\/mail.py \u90ae\u4ef6\u6807\u9898 \u90ae\u4ef6\u5185\u5bb9\r\n\r\n\u6b64\u65f6\u4f60\u5c31\u5fc5\u987b\u5728\u6574\u4e2apy\u6587\u4ef6\u7684\u5f00\u5934\u52a0\u4e0a\u8bf4\u660e\u9ed8\u8ba4\u7528\u4ec0\u4e48\u89e3\u91ca\u5668\u89e3\u91ca\u6267\u884c\r\n\u4f60\u4e0d\u52a0\uff0c\u90a3\u4f60\u4e0d\u5e26\u524d\u7f00\u7684\u6267\u884c\/usr\/bin\/mail.py\u5c31\u4f1a\u9ed8\u8ba4\u91c7\u7528bash shell\u89e3\u91ca\u5668\u6267\u884c\u6587\u4ef6\u4ee3\u7801\r\n\r\n\uff082\uff09\u5bfc\u5165\u6a21\u5757sys\uff0c\u63a5\u6536\u5916\u90e8\u7684\u4f20\u53c2\uff0c\u90ae\u4ef6\u6807\u9898\u6539\u4e3asys.argv[1]\u3001\u90ae\u4ef6\u5185\u5bb9\u503c\u6539\u4e3asys.argv[2]<\/code><\/pre>\n<p>\uff082\uff09\u521b\u5efa\/scripts\/mail.py\uff0c\u6574\u4f53\u5185\u5bb9\u5982\u4e0b<\/p>\n<pre><code>#!\/usr\/bin\/python\r\n#coding:utf-8\r\nimport smtplib\r\nimport sys\r\nfrom email.mime.text import MIMEText\r\nfrom email.header import Header\r\n\r\n# 1\u3001\u9700\u8981\u5b9a\u5236\u7684\u90e8\u5206\r\n# \u53d1\u9001\u65b9\u8d26\u53f7\r\nsender = 'xxx@163.com'\r\n# \u53d1\u9001\u65b9\u6388\u6743\u5bc6\u7801\r\npassword = 'xxxx'\r\n# \u6536\u4ef6\u65b9\u90ae\u7bb1\r\nreceiver = 'yyy@163.com'\r\n# \u90ae\u4ef6\u6807\u9898\r\nsubject = sys.argv[1]  # =========&gt; \u9488\u5bf9\u547d\u4ee4\u201c\/usr\/bin\/mail.py \u90ae\u4ef6\u6807\u9898 \u90ae\u4ef6\u5185\u5bb9\u201d\uff0csys.argv[1]\u63a5\u6536\u5230\u90ae\u4ef6\u6807\u9898\r\n# \u90ae\u4ef6\u5185\u5bb9\r\nmail_msg = sys.argv[2] # =========&gt; \u9488\u5bf9\u547d\u4ee4\u201c\/usr\/bin\/mail.py \u90ae\u4ef6\u6807\u9898 \u90ae\u4ef6\u5185\u5bb9\u201d\uff0csys.argv[1]\u63a5\u6536\u5230\u90ae\u4ef6\u5185\u5bb9\r\n# \u4e09\u4e2a\u53c2\u6570\uff1a\u7b2c\u4e00\u4e2a\u4e3a\u6587\u672c\u5185\u5bb9\uff0c\u7b2c\u4e8c\u4e2a plain \u8bbe\u7f6e\u6587\u672c\u683c\u5f0f\uff0chtml \u8bbe\u7f6e\u6587\u672c\u683c\u5f0f\u4e3ahtml\u683c\u5f0f  \u7b2c\u4e09\u4e2a utf-8 \u8bbe\u7f6e\u7f16\u7801\r\n\r\n# 2\u3001\u4ee5\u4e0b\u662f\u56fa\u5b9a\u4ee3\u7801\r\n# \u53d1\u9001\u90ae\u4ef6\u670d\u52a1\u5668\u5730\u5740\r\nsmtp_server = 'smtp.163.com'\r\nmessage = MIMEText(mail_msg, 'plain', 'utf-8')  # \u53d1\u9001\u5185\u5bb9 \uff08\u6587\u672c\u5185\u5bb9\uff0c\u53d1\u9001\u683c\u5f0f\uff0c\u7f16\u7801\u683c\u5f0f\uff09\r\n# \u53d1\u9001\u5730\u5740\r\nmessage['From'] = sender\r\n# \u63a5\u53d7\u5730\u5740\r\nmessage['To'] = receiver\r\n# \u90ae\u4ef6\u6807\u9898\r\nmessage['Subject'] = Header(subject,'utf-8')\r\ntry:\r\n    print(\"\u53d1\u9001\u90ae\u4ef6\")\r\n    # \u521b\u5efaSMTP\u5bf9\u8c61\r\n    smtp = smtplib.SMTP_SSL(smtp_server)\r\n    smtp.set_debuglevel(1)\r\n    # \u767b\u5f55\u90ae\u7bb1\u8d26\u53f7\r\n    smtp.login(sender, password)\r\n    # \u53d1\u9001\u8d26\u53f7\u4fe1\u606f\r\n    smtp.sendmail(sender, receiver, message.as_string())\r\n    print('success:\u53d1\u9001\u6210\u529f')\r\nexcept smtplib.SMTPException:\r\n    print('error:\u90ae\u4ef6\u53d1\u9001\u5931\u8d25')\r\nfinally:\r\n    # \u5173\u95ed\r\n    smtp.quit()<\/code><\/pre>\n<p>\uff083\uff09\u6388\u6743\uff0c\u5e76\u94fe\u63a5PATH\u8def\u5f84\u4e0b<\/p>\n<pre><code>chmod +x \/scripts\/mail.py\r\nln -s \/scripts\/mail.py \/usr\/bin\/mail\r\n\r\nmail \"\u6d4b\u8bd5\u90ae\u4ef6\" \"\u54c8\u54c8\u54c8\u54c8\u54c8\u54c8\u673a\u623f\u7740\u706b\u5566\u5feb\u8dd1\u554a\u4e0b\u73ed\u5566\"  # \u6ce8\u610f\u5185\u5bb9\u90e8\u5206\u8981\u7528\u5f15\u53f7\u5305\u88f9\uff0c\u56e0\u4e3a\u53ef\u80fd\u6709\u7a7a\u683c<\/code><\/pre>\n<p>2\u3001\u7136\u540e\u65b0\u5efa\u76d1\u63a7\u811a\u672cservermonitor.sh<\/p>\n<pre><code>#!\/bin\/bash\r\ncpu_limit=0 #cpu\u4f7f\u7528\u8d85\u8fc790%\u5219\u62a5\u8b66,\u6b64\u5904\u6211\u4eec\u4e3a\u4e86\u5f97\u5230\u62a5\u8b66\u90ae\u4ef6\u7684\u5b9e\u9a8c\u6548\u679c\uff0c\u76f4\u63a5\u8bbe\u7f6e\u62100\r\nmem_limit=0 #\u5185\u5b58\u4f7f\u7528\u8d85\u8fc790%\u5219\u62a5\u8b66\uff0c\u540c\u4e0a\r\ndisk='\/dev\/sda1' #\u9700\u8981\u76d1\u63a7\u7684\u78c1\u76d8\u540d\r\ndisk_inode_limit=0 #\u78c1\u76d8inode\u4f7f\u7528\u8d85\u8fc790%\u5219\u62a5\u8b66\uff0c\u540c\u4e0a\r\ndisk_space_limit=0 #\u78c1\u76d8\u7a7a\u95f4\u4f7f\u7528\u8d85\u8fc790%\u5219\u62a5\u8b66\uff0c\u540c\u4e0a\r\n\r\nfunction monitor_cpu(){\r\n    cpu_free=`vmstat 1 5 |awk 'NR&gt;=3{x = x + $15} END {print x\/5}' |awk -F. '{print $1}'`\r\n    cpu_use=$((100-cpu_free))\r\n    if [ $cpu_use -gt $cpu_limit ]\r\n        then\r\n            msg=\"TIME:$(date +%F_%T)\r\n                 HOSTNAME:$(hostname)\r\n                 IPADDR:$(ifconfig |awk 'NR==2{print $2}')\r\n                 MSG:CPU usage exceeds the limit,current value is ${cpu_use}%\"\r\n            echo $msg\r\n            \/usr\/bin\/mail \"cpu\u544a\u8b66\u4fe1\u606f\" \"$msg\"\r\n    fi\r\n}\r\n\r\nfunction monitor_mem(){\r\n    mem_total=`free |awk 'NR==2{print $2}'`\r\n    mem_use=`free |awk 'NR==2{print $3}'`\r\n    mem_per=`echo \"scale=2;$mem_use\/$mem_total\" |bc -l|cut -d. -f2`\r\n    if [ $mem_per -gt $mem_limit ]\r\n        then\r\n            msg=\"TIME:$(date +%F_%T)\r\n                 HOSTNAME:$(hostname)\r\n                 IPADDR:$(ifconfig |awk 'NR==2{print $2}')\r\n                 MSG:Memory usage exceeds the limit,current value is ${mem_per}%\"\r\n            echo $msg\r\n            \/usr\/bin\/mail \"\u5185\u5b58\u544a\u8b66\u4fe1\u606f\" \"$msg\"\r\n    fi\r\n}\r\n\r\nfunction monitor_disk_inode(){\r\n    inode_use=`df -i $disk |awk 'NR==2{print $5}' |cut -d% -f1`\r\n    if [ $inode_use -gt $disk_inode_limit ]\r\n        then\r\n            msg=\"TIME:$(date +%F_%T)\r\n                 HOSTNAME:$(hostname)\r\n                 IPADDR:$(ifconfig |awk 'NR==2{print $2}')\r\n                 MSG:Disk inode usage exceeds the limit,current value is ${inode_use}%\"\r\n            echo $msg\r\n            \/usr\/bin\/mail \"\u786c\u76d8innode\u4fe1\u606f\" \"$msg\"\r\n    fi\r\n}\r\n\r\nfunction monitor_disk_space(){\r\n    space_use=`df $disk |awk 'NR==2{print $5}'|cut -d% -f1`\r\n    if [ $space_use -gt $disk_space_limit ]\r\n        then\r\n            msg=\"TIME:$(date +%F_%T)\r\n                 HOSTNAME:$(hostname) \r\n                 IPADDR:$(ifconfig |awk 'NR==2{print $2}') \r\n                 MSG:Disk space usage exceeds the limit,current value is ${space_use}%\"\r\n            echo $msg\r\n            \/usr\/bin\/mail \"\u786c\u76d8\u7a7a\u95f4\u4fe1\u606f\" \"$msg\"\r\n    fi\r\n}\r\n\r\nmonitor_cpu &amp;&gt;&gt; \/tmp\/monitor.log\r\nmonitor_mem &amp;&gt;&gt; \/tmp\/monitor.log\r\nmonitor_disk_inode &amp;&gt;&gt; \/tmp\/monitor.log\r\nmonitor_disk_space &amp;&gt;&gt; \/tmp\/monitor.log<\/code><\/pre>\n<p>3\u3001\u6388\u6743\u5e76\u672c\u5730\u5148\u6d4b\u8bd5\u4e00\u4e0b<\/p>\n<pre><code>chmod +x \/scripts\/servermonitor.sh\r\n\/scripts\/servermonitor.sh  # \u672c\u5730\u8dd1\u4e00\u4e0b\u6d4b\u8bd5\u4e00\u4e0b<\/code><\/pre>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710732465873.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710732465873.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><br \/>\n<div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710732488566.png'><img class=\"lazyload lazyload-style-2\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  data-original=\"https:\/\/egonlin.com\/wp-content\/uploads\/2021\/07\/image-1710732488566.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"file\" \/><\/div><\/p>\n<p>4\u3001\u914d\u7f6e\u8ba1\u5212\u4efb\u52a1<\/p>\n<pre><code>* * * * * \/root\/servermonitor.sh<\/code><\/pre>\n<p>\u6ce8\u610f\uff1a\u6211\u4eec\u7528\u7684\u662f\u4eba\u5bb6163\u7684\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u53d1\u9001\u90ae\u4ef6\u4f1a\u53d7\u4e3b\u673a\u540d\u89e3\u6790\uff0c163\u90ae\u7bb1\u81ea\u52a8\u5c4f\u853d\u7b49\u65b9\u9762\u7684\u5f71\u54cd\uff0c\u6240\u4ee5\u5e73\u65f6\u6211\u4eec\u901a\u5e38\u4e5f\u4f1a\u642d\u5efa\u81ea\u5df1\u90ae\u4ef6\u670d\u52a1\u5668\uff09<\/p>\n<p>\u66f4\u591a\u6848\u4f8b\u89c1\uff1a<br \/>\n<a href=\"https:\/\/www.cnblogs.com\/linhaifeng\/p\/6602149.html#_label7\">https:\/\/www.cnblogs.com\/linhaifeng\/p\/6602149.html#_label7<\/a><\/p>\n<h2>\u516d \u5b9a\u65f6\u4efb\u52a1\u7f16\u5199\u601d\u8def<\/h2>\n<p>1.\u5148\u81ea\u5df1\u624b\u52a8\u628a\u547d\u4ee4\u4e00\u6761\u4e00\u6761\u6267\u884c\u4e00\u4e0b\uff0c\u786e\u4fdd\u4f60\u7684\u547d\u4ee4\u7b26\u5408\u4f60\u7684\u9884\u671f<\/p>\n<p>2.\u7136\u540e\u518d\u628a\u4f60\u8c03\u8bd5\u540e\u7684\u4e00\u6761\u6761\u547d\u4ee4\u6254\u5230\u6587\u4ef6\u91cc\uff0c\u8fd9\u4e2a\u6587\u4ef6\u6211\u4eec\u79f0\u4e4b\u4e3a\u4e00\u4e2a\u811a\u672c<br \/>\n\u200b \u811a\u672c\u7684\u5b58\u653e\u8def\u5f84\u6700\u597d\u7edf\u4e00\/scripts<\/p>\n<p>3.\u6267\u884c\u811a\u672c<br \/>\n\u200b \u4f7f\u7528bash\u547d\u4ee4\u6267\u884c, \u9632\u6b62\u811a\u672c\u6ca1\u6709\u589e\u52a0\u6267\u884c\u6743\u9650(\/usr\/bin\/bash \/bin\/bash)\uff0c\u786e\u4fdd\u53ef\u4ee5\u6b63\u5e38\u6267\u884c\u4e14\u7ed3\u679c\u7b26\u5408\u9884\u671f<\/p>\n<p>4.\u7f16\u5199\u5b9a\u65f6\u4efb\u52a1<br \/>\n\u200b \u53ef\u4ee5\u52a0\u4e0a\u5fc5\u8981\u7684\u6ce8\u91ca\u4fe1\u606f, \u4eba\u3001\u65f6\u95f4\u3001\u4efb\u52a1<\/p>\n<pre><code># \u6bcf\u5206\u949f\u6267\u884c\u4e00\u6761xxx\u547d\u4ee4\r\n* * * * * \/bin\/bash \/scrips\/run.sh<\/code><\/pre>\n<p>\u200b \u8bbe\u5b9a\u5b9a\u65f6\u4efb\u52a1\u6267\u884c\u7684\u5468\u671f<\/p>\n<p>\u200b \u7c98\u8d34\u6b65\u9aa43\u4e2d\u4f60\u6267\u884c\u811a\u672c\u7684\u547d\u4ee4(\u4e0d\u8981\u624b\u6572)<\/p>\n<p>5.\u8c03\u8bd5\u5b9a\u65f6\u4efb\u52a1<\/p>\n<p>\u200b \u53ef\u4ee5\u5148\u7528 * \u8ba9\u811a\u672c\u57281\u5206\u949f\u5185\u5b58\u89e6\u53d1\uff0c\u786e\u4fdd\u771f\u7684\u53ef\u4ee5\u89e6\u53d1<\/p>\n<p>\u200b \u5982\u679c\u53d1\u73b0\u6ca1\u6709\u89e6\u53d1\uff0c\u5219\u8981\uff1a<br \/>\n\u68c0\u67e5\u73af\u5883\u53d8\u91cf\u95ee\u9898\uff08\u6700\u597d\u5728\u811a\u672c\u4e2d\u91cd\u65b0\u5b9a\u4e49\u73af\u5883\u53d8\u91cfPATH\uff09<br \/>\n\u68c0\u67e5\u65e5\u5fd7\/var\/log\/cron<\/p>\n<h2>\u4e03 \u603b\u7ed3\uff1a9\u53e5\u7bb4\u8a00<\/h2>\n<p>1.\u5b9a\u65f6\u4efb\u52a1\u89c4\u5219\u4e4b\u524d\u52a0\u6ce8\u91ca<\/p>\n<p>2.\u4f7f\u7528\u811a\u672c\u6267\u884c\u5b9a\u65f6\u4efb\u52a1\uff08\u53ea\u6709\u4e00\u6761\u7b80\u5355\u547d\u4ee4\u7684\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u547d\u4ee4\u6267\u884c\uff09<\/p>\n<p>3.\u8fd0\u884c\u811a\u672c\u4e00\u5b9a\u8981\u7528\u7edd\u5bf9\u8def\u5f84\u6267\u884c\uff0c\u5e76\u4e14\u6700\u597d\u7edf\u4e00\u811a\u672c\u4f4d\u7f6e\u3002<\/p>\n<p>4.\u5b9a\u65f6\u4efb\u52a1\u4e2ddate\u547d\u4ee4\u7684\u767e\u5206\u53f7\u9700\u8f6c\u4e49\u624d\u80fd\u4f7f\u7528\u3002<\/p>\n<pre><code>* * * * * echo `date \"+%F\"` &gt;&gt; \/tmp\/1.log   # \u65e0\u6cd5\u6267\u884c\r\n* * * * * echo `date \"+\\%Y_\\%m_\\%d \\%H:\\%M:\\%S\"` &gt;&gt; \/tmp\/2.log  # \u53ef\u4ee5\u6267\u884c<\/code><\/pre>\n<p>5.\u547d\u4ee4\u6216\u811a\u672c\u7ed3\u679c(\u6b63\u786e\u53ca\u9519\u8bef)\u5b9a\u5411\u5230\u7a7a(&amp;&gt;\/dev\/null)\u6216\u8ffd\u52a0\u5230\u6587\u4ef6\u4e2d &amp;&gt;&gt;\/tmp\/run.log<\/p>\n<p>6.\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u7a0b\u5e8f\u53ca\u547d\u4ee4\u8f93\u51fa,\u5982\u6253\u5305\u547d\u4ee4\uff0ctar -v\u7684\u663e\u793a\u8fc7\u7a0b\u7684\u9009\u9879\u3002<\/p>\n<p>7.\u6253\u5305\u538b\u7f29\u4f7f\u7528\u76f8\u5bf9\u8def\u5f84\uff08\u5207\u5230\u76ee\u6807\u76ee\u5f55\u7684\u4e0a\u4e00\u7ea7\u6253\u5305\u76ee\u6807\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u5e26\u7740\u4e00\u5c42\u76ee\u5f55\uff09<\/p>\n<pre><code>[root@rockylinux \/]# tree \/test1\r\n\/test1\r\n\u251c\u2500\u2500 1.txt\r\n\u251c\u2500\u2500 2.txt\r\n\u2514\u2500\u2500 3.txt\r\n\r\ntar czf a.tar.gz \/test1 # \u6253\u5305\u7684\u5185\u5bb9\u91cc\u5e26\u7740\u4e00\u5c42\u6587\u4ef6\u5939test1\r\n\r\n\u5efa\u8bae\u8fd9\u6837\u6253\u5305\r\ncd \/test1\r\ntar czf ..\/b.tar.gz .\/*<\/code><\/pre>\n<p>8.\u5b9a\u65f6\u4efb\u52a1\u811a\u672c\u4e2d\u7684\u7a0b\u5e8f\u6587\u4ef6 ,\u5c3d\u91cf\u7528\u7edd\u5bf9\u8def\u5f84<br \/>\n<strong>\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<br \/>\n\u8fd9\u4e00\u70b9\u503c\u5f97\u5f3a\u8c03\u4e00\u4e0b\uff0ciptables\u547d\u4ee4\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5fc5\u987b\u5199\u7edd\u5bf9\u8def\u5982\/sbin\/iptables\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u6267\u884c\u5931\u8d25\uff0c\u5373\u4fbf\u662froot\u7528\u6237\u4e5f\u4e0d\u884c\uff01\uff01\uff01\uff01<\/strong><\/p>\n<p>9.\u7cfb\u7edf\u4e0e\u547d\u4ee4\u4f4d\u7f6e\u6709\u5173\u7684\u73af\u5883\u53d8\u91cf\u95ee\u9898,\u5efa\u8bae\u811a\u672c\u4e2d\u91cd\u65b0\u5b9a\u4e49\u73af\u5883\u53d8\u91cfPATH\u3002<\/p>\n<pre><code>\u5982\u4e0b\u76f4\u63a5\u5728\u811a\u672c\u4e2d\u58f0\u660e\r\n[root@localhost ~]# cat \/root\/bak.sh \r\n#!bin\/bash\r\nexport PATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/root\/bin # \u9632\u6b62\u4e0b\u8ff0\u547d\u4ee4\u51fa\u95ee\u9898\r\nmkdir \/backup\r\ncd \/\r\ntar -czf backup\/$(hostname)_$(date +\\%F_\\%T)_etc.tar.gz \/etc   \r\nfind backup -type f -name \"*.tar.gz\" -mtime +3 |xargs rm -rf\r\n[root@localhost ~]# crontab -l\r\n* * * * * \/bin\/bash \/root\/bak.sh &amp;&gt;\/dev\/null<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>crond\u8ba1\u5212\u4efb\u52a1 \u4e00 \u5b9a\u65f6\u4efb\u52a1\u4ecb\u7ecd \u200b 1\u3001\u4ec0\u4e48\u662f\u5b9a\u65f6\u4efb\u52a1\uff1f \u5b9a\u65f6+\u4efb\u52a1\uff1a\u6bcf\u5230\u8fbe\u4e00\u4e2a\u65f6\u95f4\u70b9\uff0c\u5c31\u4f1a\u81ea\u52a8\u89e6\u53d1\u6267\u884c [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":32,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[32],"tags":[21,19,35,22,20],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/235"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=235"}],"version-history":[{"count":18,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/235\/revisions"}],"predecessor-version":[{"id":10756,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/235\/revisions\/10756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/32"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}