{"id":252,"date":"2013-08-17T10:29:11","date_gmt":"2013-08-17T02:29:11","guid":{"rendered":"http:\/\/www.zyuns.com\/?p=252"},"modified":"2015-02-15T20:56:20","modified_gmt":"2015-02-15T12:56:20","slug":"linux-crontab-ding-shi-ren-wu-ming-ling-xiang-jie","status":"publish","type":"post","link":"https:\/\/www.siediyer.cn\/?p=252","title":{"rendered":"Linux Crontab \u5b9a\u65f6\u4efb\u52a1 \u547d\u4ee4\u8be6\u89e3"},"content":{"rendered":"

\u4e3a\u5f53\u524d\u7528\u6237\u521b\u5efacron\u670d\u52a1<\/p>\n

1. \u00a0\u952e\u5165 crontab\u00a0 -e \u7f16\u8f91crontab\u670d\u52a1\u6587\u4ef6<\/p>\n

\u00a0\u00a0\u00a0\u00a0 \u00a0\u4f8b\u5982 \u6587\u4ef6\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n

\u00a0\u00a0\u00a0 \u00a0*\/2 * * * * \/bin\/sh \/home\/admin\/jiaoben\/buy\/deleteFile.sh<\/p>\n

\u00a0\u00a0\u00a0\u00a0 \u4fdd\u5b58\u6587\u4ef6\u5e76\u5e76\u9000\u51fa<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0*\/2 * * * * \/bin\/sh \/home\/admin\/jiaoben\/buy\/deleteFile.sh<\/p>\n

\u00a0\u00a0 \u00a0*\/2 * * * * \u901a\u8fc7\u8fd9\u6bb5\u5b57\u6bb5\u53ef\u4ee5\u8bbe\u5b9a\u4ec0\u4e48\u65f6\u5019\u6267\u884c\u811a\u672c<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0 \/bin\/sh \/home\/admin\/jiaoben\/buy\/deleteFile.sh \u8fd9\u4e00\u5b57\u6bb5\u53ef\u4ee5\u8bbe\u5b9a\u4f60\u8981\u6267\u884c\u7684\u811a\u672c\uff0c\u8fd9\u91cc\u8981\u6ce8\u610f\u4e00\u4e0bbin\/sh \u662f\u6307\u8fd0\u884c\u00a0 \u811a\u672c\u7684\u547d\u4ee4\u00a0 \u540e\u9762\u4e00\u6bb5\u65f6\u6307\u811a\u672c\u5b58\u653e\u7684\u8def\u5f84<\/p>\n

\n

2. \u67e5\u770b\u8be5\u7528\u6237\u4e0b\u7684crontab\u670d\u52a1\u662f\u5426\u521b\u5efa\u6210\u529f\uff0c \u7528 crontab\u00a0 -l \u547d\u4ee4<\/p>\n

\n

3. \u542f\u52a8crontab\u670d\u52a1<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e00\u822c\u542f\u52a8\u670d\u52a1\u7528\u00a0 \/sbin\/service crond start \u82e5\u662f\u6839\u7528\u6237\u7684cron\u670d\u52a1\u53ef\u4ee5\u7528 sudo service crond start\uff0c \u8fd9\u91cc\u8fd8\u662f\u8981\u6ce8\u610f\u00a0 \u4e0b \u4e0d\u540c\u7248\u672clinux\u7cfb\u7edf\u542f\u52a8\u7684\u670d\u52a1\u7684\u547d\u4ee4\u4e5f\u4e0d\u540c \uff0c\u50cf\u6211\u7684\u865a\u62df\u673a\u91cc\u53ea\u9700\u7528 sudo service cron restart \u5373\u53ef\uff0c\u82e5\u662f\u5728\u6839\u7528\u4e0b\u76f4\u63a5\u952e\u5165service cron start\u5c31\u80fd\u542f\u52a8\u670d\u52a1<\/p>\n

\n

4. \u67e5\u770b\u670d\u52a1\u662f\u5426\u5df2\u7ecf\u8fd0\u884c\u7528 ps -ax | grep cron<\/p>\n

5. crontab\u547d\u4ee4<\/p>\n

\u00a0\u00a0\u00a0\u00a0 \u00a0cron\u670d\u52a1\u63d0\u4f9bcrontab\u547d\u4ee4\u6765\u8bbe\u5b9acron\u670d\u52a1\u7684\uff0c\u4ee5\u4e0b\u662f\u8fd9\u4e2a\u547d\u4ee4\u7684\u4e00\u4e9b\u53c2\u6570\u4e0e\u8bf4\u660e:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 crontab -u \/\/\u8bbe\u5b9a\u67d0\u4e2a\u7528\u6237\u7684cron\u670d\u52a1\uff0c\u4e00\u822croot\u7528\u6237\u5728\u6267\u884c\u8fd9\u4e2a\u547d\u4ee4\u7684\u65f6\u5019\u9700\u8981\u6b64\u53c2\u6570
\ncrontab -l \/\/\u5217\u51fa\u67d0\u4e2a\u7528\u6237cron\u670d\u52a1\u7684\u8be6\u7ec6\u5185\u5bb9
\ncrontab -r \/\/\u5220\u9664\u6ca1\u4e2a\u7528\u6237\u7684cron\u670d\u52a1
\ncrontab -e \/\/\u7f16\u8f91\u67d0\u4e2a\u7528\u6237\u7684cron\u670d\u52a1
\n\u6bd4\u5982\u8bf4root\u67e5\u770b\u81ea\u5df1\u7684cron\u8bbe\u7f6e:crontab -u root -l
\n\u518d\u4f8b\u5982\uff0croot\u60f3\u5220\u9664fred\u7684cron\u8bbe\u7f6e:crontab -u fred -r
\n\u5728\u7f16\u8f91cron\u670d\u52a1\u65f6\uff0c\u7f16\u8f91\u7684\u5185\u5bb9\u6709\u4e00\u4e9b\u683c\u5f0f\u548c\u7ea6\u5b9a\uff0c\u8f93\u5165:crontab -u root -e
\n\u8fdb\u5165vi\u7f16\u8f91\u6a21\u5f0f\uff0c\u7f16\u8f91\u7684\u5185\u5bb9\u4e00\u5b9a\u8981\u7b26\u5408\u4e0b\u9762\u7684\u683c\u5f0f:*\/1 * * * * ls >> \/tmp\/ls.txt
\n\u4efb\u52a1\u8c03\u5ea6\u7684crond\u5e38\u9a7b\u547d\u4ee4
\ncrond \u662flinux\u7528\u6765\u5b9a\u671f\u6267\u884c\u7a0b\u5e8f\u7684\u547d\u4ee4\u3002\u5f53\u5b89\u88c5\u5b8c\u6210\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u540e\uff0c\u9ed8\u8ba4\u4fbf\u4f1a\u542f\u52a8\u6b64<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4efb\u52a1\u8c03\u5ea6\u547d\u4ee4\u3002crond\u547d\u4ee4\u6bcf\u5206\u953a\u4f1a\u5b9a\u671f\u68c0\u67e5\u662f\u5426\u6709\u8981\u6267\u884c\u7684\u5de5\u4f5c\uff0c\u5982\u679c\u6709\u8981\u6267\u884c\u7684\u5de5<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u4f5c\u4fbf\u4f1a\u81ea\u52a8\u6267\u884c\u8be5\u5de5\u4f5c\u3002<\/p>\n

\n

6. crontab\u547d\u4ee4\u9009\u9879:<\/p>\n

\u00a0\u00a0\u00a0\u00a0 -u\u6307\u5b9a\u4e00\u4e2a\u7528\u6237<\/p>\n

\u00a0\u00a0\u00a0\u00a0 -l\u5217\u51fa\u67d0\u4e2a\u7528\u6237\u7684\u4efb\u52a1\u8ba1\u5212<\/p>\n

\u00a0\u00a0\u00a0\u00a0 -r\u5220\u9664\u67d0\u4e2a\u7528\u6237\u7684\u4efb\u52a1<\/p>\n

\u00a0\u00a0\u00a0\u00a0 -e\u7f16\u8f91\u67d0\u4e2a\u7528\u6237\u7684\u4efb\u52a1<\/p>\n

7. cron\u6587\u4ef6\u8bed\u6cd5:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0 \u5206\u00a0\u00a0\u00a0\u00a0 \u5c0f\u65f6\u00a0\u00a0 \u00a0\u65e5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6708\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u661f\u671f\u00a0\u00a0\u00a0\u00a0 \u547d\u4ee4<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0 0-59\u00a0\u00a0 0-23\u00a0\u00a0 1-31\u00a0\u00a0 1-12\u00a0\u00a0\u00a0\u00a0 0-6\u00a0\u00a0\u00a0\u00a0 command\u00a0\u00a0\u00a0\u00a0 (\u53d6\u503c\u8303\u56f4,0\u8868\u793a\u5468\u65e5\u4e00\u822c\u4e00\u884c\u5bf9\u5e94\u4e00\u4e2a\u4efb\u52a1)<\/p>\n

\u00a0\u00a0\u00a0\u00a0 \u8bb0\u4f4f\u51e0\u4e2a\u7279\u6b8a\u7b26\u53f7\u7684\u542b\u4e49:<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u201c*\u201d\u4ee3\u8868\u53d6\u503c\u8303\u56f4\u5185\u7684\u6570\u5b57,
\n\u201c\/\u201d\u4ee3\u8868\u201d\u6bcf\u201d,
\n\u201c-\u201d\u4ee3\u8868\u4ece\u67d0\u4e2a\u6570\u5b57\u5230\u67d0\u4e2a\u6570\u5b57,
\n\u201c,\u201d\u5206\u5f00\u51e0\u4e2a\u79bb\u6563\u7684\u6570\u5b57<\/p>\n

8. \u4efb\u52a1\u8c03\u5ea6\u8bbe\u7f6e\u6587\u4ef6\u7684\u5199\u6cd5
\n\u53ef\u7528crontab -e\u547d\u4ee4\u6765\u7f16\u8f91,\u7f16\u8f91\u7684\u662f\/var\/spool\/cron\u4e0b\u5bf9\u5e94\u7528\u6237\u7684cron\u6587\u4ef6,\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\/etc\/crontab\u6587\u4ef6
\n\u5177\u4f53\u683c\u5f0f\u5982\u4e0b\uff1a
\nMinute Hour Day Month Dayofweek\u00a0\u00a0 command
\n\u5206\u949f\u00a0\u00a0\u00a0\u00a0 \u5c0f\u65f6\u00a0\u00a0 \u5929\u00a0\u00a0\u00a0\u00a0 \u6708\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u5929\u6bcf\u661f\u671f\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u547d\u4ee4
\n\u6bcf\u4e2a\u5b57\u6bb5\u4ee3\u8868\u7684\u542b\u4e49\u5982\u4e0b\uff1a
\nMinute\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf\u4e2a\u5c0f\u65f6\u7684\u7b2c\u51e0\u5206\u949f\u6267\u884c\u8be5\u4efb\u52a1
\nHour\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf\u5929\u7684\u7b2c\u51e0\u4e2a\u5c0f\u65f6\u6267\u884c\u8be5\u4efb\u52a1
\nDay\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf\u6708\u7684\u7b2c\u51e0\u5929\u6267\u884c\u8be5\u4efb\u52a1
\nMonth\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf\u5e74\u7684\u7b2c\u51e0\u4e2a\u6708\u6267\u884c\u8be5\u4efb\u52a1
\nDayOfWeek\u00a0\u00a0\u00a0\u00a0 \u6bcf\u5468\u7684\u7b2c\u51e0\u5929\u6267\u884c\u8be5\u4efb\u52a1
\nCommand\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6307\u5b9a\u8981\u6267\u884c\u7684\u7a0b\u5e8f
\n\u5728\u8fd9\u4e9b\u5b57\u6bb5\u91cc\uff0c\u9664\u4e86\u201cCommand\u201d\u662f\u6bcf\u6b21\u90fd\u5fc5\u987b\u6307\u5b9a\u7684\u5b57\u6bb5\u4ee5\u5916\uff0c\u5176\u5b83\u5b57\u6bb5\u7686\u4e3a\u53ef\u9009<\/p>\n

\u00a0\u00a0\u00a0 \u5b57\u6bb5\uff0c\u53ef\u89c6\u9700\u8981\u51b3\u5b9a\u3002\u5bf9\u4e8e\u4e0d\u6307\u5b9a\u7684\u5b57\u6bb5\uff0c\u8981\u7528\u201c*\u201d\u6765\u586b\u8865\u5176\u4f4d\u7f6e\u3002
\n\u4e3e\u4f8b\u5982\u4e0b\uff1a
\n5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6307\u5b9a\u6bcf\u5c0f\u65f6\u7684\u7b2c5\u5206\u949f\u6267\u884c\u4e00\u6b21ls\u547d\u4ee4
\n30\u00a0\u00a0\u00a0\u00a0 5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6307\u5b9a\u6bcf\u5929\u7684 5:30 \u6267\u884cls\u547d\u4ee4
\n30\u00a0\u00a0\u00a0\u00a0 7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6307\u5b9a\u6bcf\u67088\u53f7\u76847\uff1a30\u5206\u6267\u884cls\u547d\u4ee4
\n30\u00a0\u00a0\u00a0\u00a0 5\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 8\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 6\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6307\u5b9a\u6bcf\u5e74\u76846\u67088\u65e55\uff1a30\u6267\u884cls\u547d\u4ee4
\n30\u00a0\u00a0\u00a0\u00a0 6\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6307\u5b9a\u6bcf\u661f\u671f\u65e5\u76846:30\u6267\u884cls\u547d\u4ee4[\u6ce8\uff1a0\u8868\u793a\u661f\u671f\u5929\uff0c1\u8868\u793a\u661f\u671f1\uff0c<\/p>\n

\u00a0\u00a0\u00a0 \u4ee5\u6b64\u7c7b\u63a8\uff0c\u4e5f\u53ef\u4ee5\u7528\u82f1\u6587\u6765\u8868\u793a\uff0csun\u8868\u793a\u661f\u671f\u5929\uff0cmon\u8868\u793a\u661f\u671f\u4e00\u7b49\u3002]<\/p>\n

\u00a0 \u00a030\u00a0\u00a0\u00a0\u00a0 3\u00a0\u00a0\u00a0\u00a0 10,20\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0 \u6bcf\u670810\u53f7\u53ca20\u53f7\u76843\uff1a30\u6267\u884cls\u547d\u4ee4[\u6ce8\uff1a\u201c\uff0c\u201d\u7528\u6765\u8fde\u63a5\u591a\u4e2a\u4e0d\u8fde\u7eed\u7684\u65f6\u6bb5]<\/p>\n

\u00a0\u00a0 \u00a025\u00a0\u00a0\u00a0\u00a0 8-11 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf\u59298-11\u70b9\u7684\u7b2c25\u5206\u949f\u6267\u884cls\u547d\u4ee4[\u6ce8\uff1a\u201c-\u201d\u7528\u6765\u8fde\u63a5\u8fde\u7eed\u7684\u65f6\u6bb5]<\/p>\n

\u00a0\u00a0\u00a0 *\/15\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf15\u5206\u949f\u6267\u884c\u4e00\u6b21ls\u547d\u4ee4 [\u5373\u6bcf\u4e2a\u5c0f\u65f6\u7684\u7b2c0 15 30 45 60\u5206\u949f\u6267\u884cls\u547d\u4ee4 ]<\/p>\n

\u00a0\u00a0\u00a0 \u00a030\u00a0\u00a0 6\u00a0\u00a0\u00a0\u00a0 *\/1<\/em>0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 ls\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u6bcf\u4e2a\u6708\u4e2d\uff0c\u6bcf\u969410\u59296:30\u6267\u884c\u4e00\u6b21ls\u547d\u4ee4[\u5373\u6bcf\u6708\u76841\u300111\u300121\u300131\u65e5\u662f\u76846\uff1a30\u6267\u884c\u4e00\u6b21ls \u547d\u4ee4\u3002 ]<\/p>\n

\u00a0\u00a0\u00a0\u00a0 \u6bcf\u59297\uff1a50\u4ee5root \u8eab\u4efd\u6267\u884c\/etc\/cron.daily\u76ee\u5f55\u4e2d\u7684\u6240\u6709\u53ef\u6267\u884c\u6587\u4ef6<\/p>\n

\u00a0\u00a0\u00a0\u00a0 50\u00a0\u00a0 7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 root\u00a0\u00a0\u00a0\u00a0 run-parts\u00a0\u00a0\u00a0\u00a0 \/etc\/cron.daily\u00a0\u00a0 [ \u6ce8\uff1arun-parts\u53c2\u6570\u8868\u793a\uff0c\u6267\u884c\u540e\u9762\u76ee\u5f55\u4e2d\u7684\u6240\u6709\u53ef\u6267\u884c\u6587\u4ef6\u3002 ]<\/p>\n

\n

9. \u65b0\u589e\u8c03\u5ea6\u4efb\u52a1<\/p>\n

\u00a0\u00a0\u00a0\u00a0 \u65b0\u589e\u8c03\u5ea6\u4efb\u52a1\u53ef\u7528\u4e24\u79cd\u65b9\u6cd5\uff1a
\n1)\u3001\u5728\u547d\u4ee4\u884c\u8f93\u5165: crontab -e \u7136\u540e\u6dfb\u52a0\u76f8\u5e94\u7684\u4efb\u52a1\uff0cwq\u5b58\u76d8\u9000\u51fa\u3002
\n2)\u3001\u76f4\u63a5\u7f16\u8f91\/etc\/crontab \u6587\u4ef6\uff0c\u5373vi \/etc\/crontab\uff0c\u6dfb\u52a0\u76f8\u5e94\u7684\u4efb\u52a1\u3002<\/p>\n

10. \u67e5\u770b\u8c03\u5ea6\u4efb\u52a1
\ncrontab -l \/\/\u5217\u51fa\u5f53\u524d\u7684\u6240\u6709\u8c03\u5ea6\u4efb\u52a1
\ncrontab -l -u jp\u00a0\u00a0 \/\/\u5217\u51fa\u7528\u6237jp\u7684\u6240\u6709\u8c03\u5ea6\u4efb\u52a1<\/p>\n

11. \u5220\u9664\u4efb\u52a1\u8c03\u5ea6\u5de5\u4f5c
\ncrontab -r\u00a0\u00a0 \/\/\u5220\u9664\u6240\u6709\u4efb\u52a1\u8c03\u5ea6\u5de5\u4f5c<\/p>\n

12. \u4efb\u52a1\u8c03\u5ea6\u6267\u884c\u7ed3\u679c\u7684\u8f6c\u5411
\n\u4f8b1\uff1a\u6bcf\u59295\uff1a30\u6267\u884cls\u547d\u4ee4\uff0c\u5e76\u628a\u7ed3\u679c\u8f93\u51fa\u5230\/jp\/test\u6587\u4ef6\u4e2d
\n30 5 * * * ls >\/jp\/test 2>&1
\n\u6ce8\uff1a2>&1 \u8868\u793a\u6267\u884c\u7ed3\u679c\u53ca\u9519\u8bef\u4fe1\u606f\u3002
\n\u7f16\u8f91\/etc\/crontab \u6587\u4ef6\u914d\u7f6ecron<\/p>\n

\u00a0\u00a0\u00a0\u00a0 cron\u670d\u52a1\u6bcf\u5206\u949f\u4e0d\u4ec5\u8981\u8bfb\u4e00\u6b21\/var\/spool\/cron\u5185\u7684\u6240\u6709\u6587\u4ef6\uff0c\u8fd8\u9700\u8981\u8bfb\u4e00\u6b21\u00a0\/etc\/crontab,\u56e0\u6b64\u6211\u4eec\u914d\u7f6e\u8fd9\u4e2a\u6587\u4ef6\u4e5f\u80fd\u8fd0\u7528 cron\u670d\u52a1\u505a\u4e00\u4e9b\u4e8b\u60c5\u3002\u7528crontab\u914d\u7f6e\u662f\u9488\u5bf9\u67d0\u4e2a\u7528\u6237\u7684\uff0c\u800c\u7f16\u8f91\/etc\/crontab\u662f\u9488\u5bf9\u7cfb\u7edf\u7684\u4efb\u52a1\u3002\u6b64\u6587\u4ef6\u7684\u6587\u4ef6\u683c\u5f0f\u662f:<\/p>\n

\u3000\u3000SHELL=\/bin\/bash<\/p>\n

\u3000\u3000PATH=\/sbin:\/bin:\/usr\/sbin:\/usr\/bin<\/p>\n

\u3000\u3000MAILTO=root \/\/\u5982\u679c\u51fa\u73b0\u9519\u8bef\uff0c\u6216\u8005\u6709\u6570\u636e\u8f93\u51fa\uff0c\u6570\u636e\u4f5c\u4e3a\u90ae\u4ef6\u53d1\u7ed9\u8fd9\u4e2a\u5e10\u53f7<\/p>\n

\u3000\u3000HOME=\/ \/\/\u4f7f\u7528\u8005\u8fd0\u884c\u7684\u8def\u5f84,\u8fd9\u91cc\u662f\u6839\u76ee\u5f55
\n# run-parts<\/p>\n

\u3000\u300001\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 root run-parts \/etc\/cron.hourly\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u6bcf\u5c0f\u65f6\u6267\u884c<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/etc\/cron.hourly\u5185\u7684\u811a\u672c<\/p>\n

\u3000\u00a0\u00a0\u00a0 02\u00a0\u00a0 4\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 root run-parts \/etc\/cron.daily\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u6bcf\u5929\u6267\u884c\/etc\/cron.daily\u5185\u7684\u811a\u672c<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 22\u00a0\u00a0 4\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0 root run-parts \/etc\/cron.weekly\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/\u6bcf\u661f\u671f\u6267\u884c\u00a0\/etc\/cron.weekly\u5185\u7684\u811a\u672c<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0 42\u00a0\u00a0 4\u00a0\u00a0 1\u00a0\u00a0 *\u00a0\u00a0 *\u00a0\u00a0\u00a0\u00a0 root run-parts \/etc\/cron.monthly\u00a0\u00a0\u00a0\u00a0 \/\/\u6bcf\u6708\u53bb\u6267\u884c\/etc\/cron.monthly\u5185\u7684\u811a\u672c
\n\u5927\u5bb6\u6ce8\u610f\u201drun-parts\u201d\u8fd9\u4e2a\u53c2\u6570\u4e86\uff0c\u5982\u679c\u53bb\u6389\u8fd9\u4e2a\u53c2\u6570\u7684\u8bdd\uff0c\u540e\u9762\u5c31\u53ef\u4ee5\u5199\u8981\u8fd0\u884c\u7684\u67d0\u4e2a\u811a\u672c\u540d\uff0c\u800c\u4e0d\u662f\u6587\u4ef6\u5939\u540d\u4e86<\/p>\n

\u00a0\u00a0\u00a0 \u4f8b\u5982\uff1a<\/p>\n

\u00a0\u00a0\u00a0\u00a0 1) \u5728\u547d\u4ee4\u884c\u8f93\u5165: crontab -e \u7136\u540e\u6dfb\u52a0\u76f8\u5e94\u7684\u4efb\u52a1\uff0cwq\u5b58\u76d8\u9000\u51fa\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0 2)\u76f4\u63a5\u7f16\u8f91\/etc\/crontab \u6587\u4ef6\uff0c\u5373vi \/etc\/crontab\uff0c\u6dfb\u52a0\u76f8\u5e94\u7684\u4efb\u52a1
\n11 2 21 10 * rm -rf \/mnt\/fb<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e3a\u5f53\u524d\u7528\u6237\u521b\u5efacron\u670d\u52a1 1. \u00a0\u952e\u5165 crontab\u00a0 -e \u7f16\u8f91crontab\u670d\u52a1\u6587\u4ef6 \u00a0\u00a0\u00a0\u00a0 \u00a0\u4f8b\u5982 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-252","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=252"}],"version-history":[{"count":1,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/252\/revisions"}],"predecessor-version":[{"id":466,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/252\/revisions\/466"}],"wp:attachment":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}