![\"\"](\"https:\/\/www.datarelab.com\/blog\/wp-content\/uploads\/2015\/01\/08090352-4e0aa3fe4f404b3491df384758229be1.png\")
<\/p>\n\u524d\u4e00\u5929\u5b66\u4e60\u4e86\u00a0at\u00a0\u547d\u4ee4\u662f\u9488\u5bf9\u4ec5\u8fd0\u884c\u4e00\u6b21\u7684\u4efb\u52a1\uff0c\u5faa\u73af\u8fd0\u884c\u7684\u4f8b\u884c\u6027\u8ba1\u5212\u4efb\u52a1\uff0clinux\u7cfb\u7edf\u5219\u662f\u7531\u00a0cron\u00a0(crond)\u00a0\u8fd9\u4e2a\u7cfb\u7edf\u670d\u52a1\u6765\u63a7\u5236\u7684\u3002Linux\u00a0\u7cfb\u7edf\u4e0a\u9762\u539f\u672c\u5c31\u6709\u975e\u5e38\u591a\u7684\u8ba1\u5212\u6027\u5de5\u4f5c\uff0c\u56e0\u6b64\u8fd9\u4e2a\u7cfb\u7edf\u670d\u52a1\u662f\u9ed8\u8ba4\u542f\u52a8\u7684\u3002\u53e6\u5916,\u00a0\u7531\u4e8e\u4f7f\u7528\u8005\u81ea\u5df1\u4e5f\u53ef\u4ee5\u8bbe\u7f6e\u8ba1\u5212\u4efb\u52a1\uff0c\u6240\u4ee5\uff0c\u00a0Linux\u00a0\u7cfb\u7edf\u4e5f\u63d0\u4f9b\u4e86\u4f7f\u7528\u8005\u63a7\u5236\u8ba1\u5212\u4efb\u52a1\u7684\u547d\u4ee4\u00a0:crontab\u00a0\u547d\u4ee4\u3002<\/p>\n
\u4e00\u3001crond\u7b80\u4ecb<\/p>\n
crond\u662flinux\u4e0b\u7528\u6765\u5468\u671f\u6027\u7684\u6267\u884c\u67d0\u79cd\u4efb\u52a1\u6216\u7b49\u5f85\u5904\u7406\u67d0\u4e9b\u4e8b\u4ef6\u7684\u4e00\u4e2a\u5b88\u62a4\u8fdb\u7a0b\uff0c\u4e0ewindows\u4e0b\u7684\u8ba1\u5212\u4efb\u52a1\u7c7b\u4f3c\uff0c\u5f53\u5b89\u88c5\u5b8c\u6210\u64cd\u4f5c\u7cfb\u7edf\u540e\uff0c\u9ed8\u8ba4\u4f1a\u5b89\u88c5\u6b64\u670d\u52a1\u5de5\u5177\uff0c\u5e76\u4e14\u4f1a\u81ea\u52a8\u542f\u52a8crond\u8fdb\u7a0b\uff0ccrond\u8fdb\u7a0b\u6bcf\u5206\u949f\u4f1a\u5b9a\u671f\u68c0\u67e5\u662f\u5426\u6709\u8981\u6267\u884c\u7684\u4efb\u52a1\uff0c\u5982\u679c\u6709\u8981\u6267\u884c\u7684\u4efb\u52a1\uff0c\u5219\u81ea\u52a8\u6267\u884c\u8be5\u4efb\u52a1\u3002<\/p>\n
Linux\u4e0b\u7684\u4efb\u52a1\u8c03\u5ea6\u5206\u4e3a\u4e24\u7c7b\uff0c\u7cfb\u7edf\u4efb\u52a1\u8c03\u5ea6\u548c\u7528\u6237\u4efb\u52a1\u8c03\u5ea6\u3002<\/p>\n
\u7cfb\u7edf\u4efb\u52a1\u8c03\u5ea6\uff1a\u7cfb\u7edf\u5468\u671f\u6027\u6240\u8981\u6267\u884c\u7684\u5de5\u4f5c\uff0c\u6bd4\u5982\u5199\u7f13\u5b58\u6570\u636e\u5230\u786c\u76d8\u3001\u65e5\u5fd7\u6e05\u7406\u7b49\u3002\u5728\/etc\u76ee\u5f55\u4e0b\u6709\u4e00\u4e2acrontab\u6587\u4ef6\uff0c\u8fd9\u4e2a\u5c31\u662f\u7cfb\u7edf\u4efb\u52a1\u8c03\u5ea6\u7684\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n
\/etc\/crontab\u6587\u4ef6\u5305\u62ec\u4e0b\u9762\u51e0\u884c\uff1a<\/p>\n
[root@localhost\u00a0~]#\u00a0cat\u00a0\/etc\/crontab<\/p>\n
SHELL=\/bin\/bash<\/p>\n
PATH=\/sbin:\/bin:\/usr\/sbin:\/usr\/bin<\/p>\n
MAILTO=\"\"HOME=\/<\/p>\n
#\u00a0run-parts<\/p>\n
51\u00a0*\u00a0*\u00a0*\u00a0*\u00a0root\u00a0run-parts\u00a0\/etc\/cron.hourly<\/p>\n
24\u00a07\u00a0*\u00a0*\u00a0*\u00a0root\u00a0run-parts\u00a0\/etc\/cron.daily<\/p>\n
22\u00a04\u00a0*\u00a0*\u00a00\u00a0root\u00a0run-parts\u00a0\/etc\/cron.weekly<\/p>\n
42\u00a04\u00a01\u00a0*\u00a0*\u00a0root\u00a0run-parts\u00a0\/etc\/cron.monthly<\/p>\n
[root@localhost\u00a0~]#<\/p>\n
\u524d\u56db\u884c\u662f\u7528\u6765\u914d\u7f6ecrond\u4efb\u52a1\u8fd0\u884c\u7684\u73af\u5883\u53d8\u91cf\uff0c\u7b2c\u4e00\u884cSHELL\u53d8\u91cf\u6307\u5b9a\u4e86\u7cfb\u7edf\u8981\u4f7f\u7528\u54ea\u4e2ashell\uff0c\u8fd9\u91cc\u662fbash\uff0c\u7b2c\u4e8c\u884cPATH\u53d8\u91cf\u6307\u5b9a\u4e86\u7cfb\u7edf\u6267\u884c\u547d\u4ee4\u7684\u8def\u5f84\uff0c\u7b2c\u4e09\u884cMAILTO\u53d8\u91cf\u6307\u5b9a\u4e86crond\u7684\u4efb\u52a1\u6267\u884c\u4fe1\u606f\u5c06\u901a\u8fc7\u7535\u5b50\u90ae\u4ef6\u53d1\u9001\u7ed9root\u7528\u6237\uff0c\u5982\u679cMAILTO\u53d8\u91cf\u7684\u503c\u4e3a\u7a7a\uff0c\u5219\u8868\u793a\u4e0d\u53d1\u9001\u4efb\u52a1\u6267\u884c\u4fe1\u606f\u7ed9\u7528\u6237\uff0c\u7b2c\u56db\u884c\u7684HOME\u53d8\u91cf\u6307\u5b9a\u4e86\u5728\u6267\u884c\u547d\u4ee4\u6216\u8005\u811a\u672c\u65f6\u4f7f\u7528\u7684\u4e3b\u76ee\u5f55\u3002\u7b2c\u516d\u81f3\u4e5d\u884c\u8868\u793a\u7684\u542b\u4e49\u5c06\u5728\u4e0b\u4e2a\u5c0f\u8282\u8be6\u7ec6\u8bb2\u8ff0\u3002\u8fd9\u91cc\u4e0d\u5728\u591a\u8bf4\u3002<\/p>\n
\u7528\u6237\u4efb\u52a1\u8c03\u5ea6\uff1a\u7528\u6237\u5b9a\u671f\u8981\u6267\u884c\u7684\u5de5\u4f5c\uff0c\u6bd4\u5982\u7528\u6237\u6570\u636e\u5907\u4efd\u3001\u5b9a\u65f6\u90ae\u4ef6\u63d0\u9192\u7b49\u3002\u7528\u6237\u53ef\u4ee5\u4f7f\u7528\u00a0crontab\u00a0\u5de5\u5177\u6765\u5b9a\u5236\u81ea\u5df1\u7684\u8ba1\u5212\u4efb\u52a1\u3002\u6240\u6709\u7528\u6237\u5b9a\u4e49\u7684crontab\u00a0\u6587\u4ef6\u90fd\u88ab\u4fdd\u5b58\u5728\u00a0\/var\/spool\/cron\u76ee\u5f55\u4e2d\u3002\u5176\u6587\u4ef6\u540d\u4e0e\u7528\u6237\u540d\u4e00\u81f4\u3002<\/p>\n
\u4f7f\u7528\u8005\u6743\u9650\u6587\u4ef6\uff1a<\/p>\n
\u6587\u4ef6\uff1a<\/p>\n
\/etc\/cron.deny<\/p>\n
\u8bf4\u660e\uff1a<\/p>\n
\u8be5\u6587\u4ef6\u4e2d\u6240\u5217\u7528\u6237\u4e0d\u5141\u8bb8\u4f7f\u7528crontab\u547d\u4ee4<\/p>\n
\u6587\u4ef6\uff1a<\/p>\n
\/etc\/cron.allow<\/p>\n
\u8bf4\u660e\uff1a<\/p>\n
\u8be5\u6587\u4ef6\u4e2d\u6240\u5217\u7528\u6237\u5141\u8bb8\u4f7f\u7528crontab\u547d\u4ee4<\/p>\n
\u6587\u4ef6\uff1a<\/p>\n
\/var\/spool\/cron\/<\/p>\n
\u8bf4\u660e\uff1a<\/p>\n
\u6240\u6709\u7528\u6237crontab\u6587\u4ef6\u5b58\u653e\u7684\u76ee\u5f55,\u4ee5\u7528\u6237\u540d\u547d\u540d<\/p>\n
crontab\u6587\u4ef6\u7684\u542b\u4e49\uff1a<\/p>\n
\u7528\u6237\u6240\u5efa\u7acb\u7684crontab\u6587\u4ef6\u4e2d\uff0c\u6bcf\u4e00\u884c\u90fd\u4ee3\u8868\u4e00\u9879\u4efb\u52a1\uff0c\u6bcf\u884c\u7684\u6bcf\u4e2a\u5b57\u6bb5\u4ee3\u8868\u4e00\u9879\u8bbe\u7f6e\uff0c\u5b83\u7684\u683c\u5f0f\u5171\u5206\u4e3a\u516d\u4e2a\u5b57\u6bb5\uff0c\u524d\u4e94\u6bb5\u662f\u65f6\u95f4\u8bbe\u5b9a\u6bb5\uff0c\u7b2c\u516d\u6bb5\u662f\u8981\u6267\u884c\u7684\u547d\u4ee4\u6bb5\uff0c\u683c\u5f0f\u5982\u4e0b\uff1a<\/p>\n
minute\u00a0\u00a0\u00a0hour\u00a0\u00a0\u00a0day\u00a0\u00a0\u00a0month\u00a0\u00a0\u00a0week\u00a0\u00a0\u00a0command<\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
minute\uff1a\u00a0\u8868\u793a\u5206\u949f\uff0c\u53ef\u4ee5\u662f\u4ece0\u523059\u4e4b\u95f4\u7684\u4efb\u4f55\u6574\u6570\u3002<\/p>\n
hour\uff1a\u8868\u793a\u5c0f\u65f6\uff0c\u53ef\u4ee5\u662f\u4ece0\u523023\u4e4b\u95f4\u7684\u4efb\u4f55\u6574\u6570\u3002<\/p>\n
day\uff1a\u8868\u793a\u65e5\u671f\uff0c\u53ef\u4ee5\u662f\u4ece1\u523031\u4e4b\u95f4\u7684\u4efb\u4f55\u6574\u6570\u3002<\/p>\n
month\uff1a\u8868\u793a\u6708\u4efd\uff0c\u53ef\u4ee5\u662f\u4ece1\u523012\u4e4b\u95f4\u7684\u4efb\u4f55\u6574\u6570\u3002<\/p>\n
week\uff1a\u8868\u793a\u661f\u671f\u51e0\uff0c\u53ef\u4ee5\u662f\u4ece0\u52307\u4e4b\u95f4\u7684\u4efb\u4f55\u6574\u6570\uff0c\u8fd9\u91cc\u76840\u62167\u4ee3\u8868\u661f\u671f\u65e5\u3002<\/p>\n
command\uff1a\u8981\u6267\u884c\u7684\u547d\u4ee4\uff0c\u53ef\u4ee5\u662f\u7cfb\u7edf\u547d\u4ee4\uff0c\u4e5f\u53ef\u4ee5\u662f\u81ea\u5df1\u7f16\u5199\u7684\u811a\u672c\u6587\u4ef6\u3002<\/p>\n
<\/p>\n
\u5728\u4ee5\u4e0a\u5404\u4e2a\u5b57\u6bb5\u4e2d\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7279\u6b8a\u5b57\u7b26\uff1a<\/p>\n
\u661f\u53f7\uff08*\uff09\uff1a\u4ee3\u8868\u6240\u6709\u53ef\u80fd\u7684\u503c\uff0c\u4f8b\u5982month\u5b57\u6bb5\u5982\u679c\u662f\u661f\u53f7\uff0c\u5219\u8868\u793a\u5728\u6ee1\u8db3\u5176\u5b83\u5b57\u6bb5\u7684\u5236\u7ea6\u6761\u4ef6\u540e\u6bcf\u6708\u90fd\u6267\u884c\u8be5\u547d\u4ee4\u64cd\u4f5c\u3002<\/p>\n
\u9017\u53f7\uff08,\uff09\uff1a\u53ef\u4ee5\u7528\u9017\u53f7\u9694\u5f00\u7684\u503c\u6307\u5b9a\u4e00\u4e2a\u5217\u8868\u8303\u56f4\uff0c\u4f8b\u5982\uff0c\u201c1,2,5,7,8,9\u201d<\/p>\n
\u4e2d\u6760\uff08-\uff09\uff1a\u53ef\u4ee5\u7528\u6574\u6570\u4e4b\u95f4\u7684\u4e2d\u6760\u8868\u793a\u4e00\u4e2a\u6574\u6570\u8303\u56f4\uff0c\u4f8b\u5982\u201c2-6\u201d\u8868\u793a\u201c2,3,4,5,6\u201d<\/p>\n
\u6b63\u659c\u7ebf\uff08\/\uff09\uff1a\u53ef\u4ee5\u7528\u6b63\u659c\u7ebf\u6307\u5b9a\u65f6\u95f4\u7684\u95f4\u9694\u9891\u7387\uff0c\u4f8b\u5982\u201c0-23\/2\u201d\u8868\u793a\u6bcf\u4e24\u5c0f\u65f6\u6267\u884c\u4e00\u6b21\u3002\u540c\u65f6\u6b63\u659c\u7ebf\u53ef\u4ee5\u548c\u661f\u53f7\u4e00\u8d77\u4f7f\u7528\uff0c\u4f8b\u5982*\/10\uff0c\u5982\u679c\u7528\u5728minute\u5b57\u6bb5\uff0c\u8868\u793a\u6bcf\u5341\u5206\u949f\u6267\u884c\u4e00\u6b21\u3002<\/p>\n
\u4e8c\u3001crond\u670d\u52a1<\/p>\n
\u5b89\u88c5crontab\uff1a<\/p>\n
yum\u00a0install\u00a0crontabs<\/p>\n
\u670d\u52a1\u64cd\u4f5c\u8bf4\u660e\uff1a<\/p>\n
\/sbin\/service\u00a0crond\u00a0start\u00a0\/\/\u542f\u52a8\u670d\u52a1<\/p>\n
\/sbin\/service\u00a0crond\u00a0stop\u00a0\/\/\u5173\u95ed\u670d\u52a1<\/p>\n
\/sbin\/service\u00a0crond\u00a0restart\u00a0\/\/\u91cd\u542f\u670d\u52a1<\/p>\n
\/sbin\/service\u00a0crond\u00a0reload\u00a0\/\/\u91cd\u65b0\u8f7d\u5165\u914d\u7f6e<\/p>\n
\u67e5\u770bcrontab\u670d\u52a1\u72b6\u6001\uff1a<\/p>\n
service\u00a0crond\u00a0status<\/p>\n
\u624b\u52a8\u542f\u52a8crontab\u670d\u52a1\uff1a<\/p>\n
service\u00a0crond\u00a0start<\/p>\n
\u67e5\u770bcrontab\u670d\u52a1\u662f\u5426\u5df2\u8bbe\u7f6e\u4e3a\u5f00\u673a\u542f\u52a8\uff0c\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n
ntsysv<\/p>\n
\u52a0\u5165\u5f00\u673a\u81ea\u52a8\u542f\u52a8\uff1a<\/p>\n
chkconfig\u00a0\u2013level\u00a035\u00a0crond\u00a0on<\/p>\n
\u4e09\u3001crontab\u547d\u4ee4\u8be6\u89e3<\/p>\n
1\uff0e\u547d\u4ee4\u683c\u5f0f\uff1a<\/p>\n
crontab\u00a0[-u\u00a0user]\u00a0file<\/p>\n
crontab\u00a0[-u\u00a0user]\u00a0[\u00a0-e\u00a0|\u00a0-l\u00a0|\u00a0-r\u00a0]<\/p>\n
2\uff0e\u547d\u4ee4\u529f\u80fd\uff1a<\/p>\n
\u901a\u8fc7crontab\u00a0\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u56fa\u5b9a\u7684\u95f4\u9694\u65f6\u95f4\u6267\u884c\u6307\u5b9a\u7684\u7cfb\u7edf\u6307\u4ee4\u6216\u00a0shell\u00a0script\u811a\u672c\u3002\u65f6\u95f4\u95f4\u9694\u7684\u5355\u4f4d\u53ef\u4ee5\u662f\u5206\u949f\u3001\u5c0f\u65f6\u3001\u65e5\u3001\u6708\u3001\u5468\u53ca\u4ee5\u4e0a\u7684\u4efb\u610f\u7ec4\u5408\u3002\u8fd9\u4e2a\u547d\u4ee4\u975e\u5e38\u8bbe\u5408\u5468\u671f\u6027\u7684\u65e5\u5fd7\u5206\u6790\u6216\u6570\u636e\u5907\u4efd\u7b49\u5de5\u4f5c\u3002<\/p>\n
3\uff0e\u547d\u4ee4\u53c2\u6570\uff1a<\/p>\n
-u\u00a0user\uff1a\u7528\u6765\u8bbe\u5b9a\u67d0\u4e2a\u7528\u6237\u7684crontab\u670d\u52a1\uff0c\u4f8b\u5982\uff0c\u201c-u\u00a0ixdba\u201d\u8868\u793a\u8bbe\u5b9aixdba\u7528\u6237\u7684crontab\u670d\u52a1\uff0c\u6b64\u53c2\u6570\u4e00\u822c\u6709root\u7528\u6237\u6765\u8fd0\u884c\u3002<\/p>\n
file\uff1afile\u662f\u547d\u4ee4\u6587\u4ef6\u7684\u540d\u5b57,\u8868\u793a\u5c06file\u505a\u4e3acrontab\u7684\u4efb\u52a1\u5217\u8868\u6587\u4ef6\u5e76\u8f7d\u5165crontab\u3002\u5982\u679c\u5728\u547d\u4ee4\u884c\u4e2d\u6ca1\u6709\u6307\u5b9a\u8fd9\u4e2a\u6587\u4ef6\uff0ccrontab\u547d\u4ee4\u5c06\u63a5\u53d7\u6807\u51c6\u8f93\u5165\uff08\u952e\u76d8\uff09\u4e0a\u952e\u5165\u7684\u547d\u4ee4\uff0c\u5e76\u5c06\u5b83\u4eec\u8f7d\u5165crontab\u3002<\/p>\n
-e\uff1a\u7f16\u8f91\u67d0\u4e2a\u7528\u6237\u7684crontab\u6587\u4ef6\u5185\u5bb9\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u7528\u6237\uff0c\u5219\u8868\u793a\u7f16\u8f91\u5f53\u524d\u7528\u6237\u7684crontab\u6587\u4ef6\u3002<\/p>\n
-l\uff1a\u663e\u793a\u67d0\u4e2a\u7528\u6237\u7684crontab\u6587\u4ef6\u5185\u5bb9\uff0c\u5982\u679c\u4e0d\u6307\u5b9a\u7528\u6237\uff0c\u5219\u8868\u793a\u663e\u793a\u5f53\u524d\u7528\u6237\u7684crontab\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n
-r\uff1a\u4ece\/var\/spool\/cron\u76ee\u5f55\u4e2d\u5220\u9664\u67d0\u4e2a\u7528\u6237\u7684crontab\u6587\u4ef6\uff0c\u5982\u679c\u4e0d\u6307\u5b9a\u7528\u6237\uff0c\u5219\u9ed8\u8ba4\u5220\u9664\u5f53\u524d\u7528\u6237\u7684crontab\u6587\u4ef6\u3002<\/p>\n
-i\uff1a\u5728\u5220\u9664\u7528\u6237\u7684crontab\u6587\u4ef6\u65f6\u7ed9\u786e\u8ba4\u63d0\u793a\u3002<\/p>\n
4\uff0e\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n
1).\u00a0\u521b\u5efa\u4e00\u4e2a\u65b0\u7684crontab\u6587\u4ef6<\/p>\n
\u5728\u8003\u8651\u5411cron\u8fdb\u7a0b\u63d0\u4ea4\u4e00\u4e2acrontab\u6587\u4ef6\u4e4b\u524d\uff0c\u9996\u5148\u8981\u505a\u7684\u4e00\u4ef6\u4e8b\u60c5\u5c31\u662f\u8bbe\u7f6e\u73af\u5883\u53d8\u91cfEDITOR\u3002cron\u8fdb\u7a0b\u6839\u636e\u5b83\u6765\u786e\u5b9a\u4f7f\u7528\u54ea\u4e2a\u7f16\u8f91\u5668\u7f16\u8f91crontab\u6587\u4ef6\u30029\u00a09\u00a0%\u7684UNIX\u548cLINUX\u7528\u6237\u90fd\u4f7f\u7528vi\uff0c\u5982\u679c\u4f60\u4e5f\u662f\u8fd9\u6837\uff0c\u90a3\u4e48\u4f60\u5c31\u7f16\u8f91$\u00a0HOME\u76ee\u5f55\u4e0b\u7684.\u00a0profile\u6587\u4ef6\uff0c\u5728\u5176\u4e2d\u52a0\u5165\u8fd9\u6837\u4e00\u884c\uff1a<\/p>\n
EDITOR=vi;\u00a0export\u00a0EDITOR<\/p>\n
\u7136\u540e\u4fdd\u5b58\u5e76\u9000\u51fa\u3002\u4e0d\u59a8\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a<user>\u00a0cron\u7684\u6587\u4ef6\uff0c\u5176\u4e2d<user>\u662f\u7528\u6237\u540d\uff0c\u4f8b\u5982\uff0c\u00a0davecron\u3002\u5728\u8be5\u6587\u4ef6\u4e2d\u52a0\u5165\u5982\u4e0b\u7684\u5185\u5bb9\u3002<\/p>\n
#\u00a0(put\u00a0your\u00a0own\u00a0initials\u00a0here)echo\u00a0the\u00a0date\u00a0to\u00a0the\u00a0console\u00a0every<\/p>\n
#\u00a015minutes\u00a0between\u00a06pm\u00a0and\u00a06am<\/p>\n
0,15,30,45\u00a018-06\u00a0*\u00a0*\u00a0*\u00a0\/bin\/echo\u00a0'date'\u00a0>\u00a0\/dev\/console<\/p>\n
\u4fdd\u5b58\u5e76\u9000\u51fa\u3002\u786e\u4fe1\u524d\u97625\u4e2a\u57df\u7528\u7a7a\u683c\u5206\u9694\u3002<\/p>\n
\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u7cfb\u7edf\u5c06\u6bcf\u96941\u00a05\u5206\u949f\u5411\u63a7\u5236\u53f0\u8f93\u51fa\u4e00\u6b21\u5f53\u524d\u65f6\u95f4\u3002\u5982\u679c\u7cfb\u7edf\u5d29\u6e83\u6216\u6302\u8d77\uff0c\u4ece\u6700\u540e\u6240\u663e\u793a\u7684\u65f6\u95f4\u5c31\u53ef\u4ee5\u4e00\u773c\u770b\u51fa\u7cfb\u7edf\u662f\u4ec0\u4e48\u65f6\u95f4\u505c\u6b62\u5de5\u4f5c\u7684\u3002\u5728\u6709\u4e9b\u7cfb\u7edf\u4e2d\uff0c\u7528tty1\u6765\u8868\u793a\u63a7\u5236\u53f0\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u5bf9\u4e0a\u9762\u7684\u4f8b\u5b50\u8fdb\u884c\u76f8\u5e94\u7684\u4fee\u6539\u3002\u4e3a\u4e86\u63d0\u4ea4\u4f60\u521a\u521a\u521b\u5efa\u7684crontab\u6587\u4ef6\uff0c\u53ef\u4ee5\u628a\u8fd9\u4e2a\u65b0\u521b\u5efa\u7684\u6587\u4ef6\u4f5c\u4e3acron\u547d\u4ee4\u7684\u53c2\u6570\uff1a<\/p>\n
$\u00a0crontab\u00a0davecron<\/p>\n
\u73b0\u5728\u8be5\u6587\u4ef6\u5df2\u7ecf\u63d0\u4ea4\u7ed9cron\u8fdb\u7a0b\uff0c\u5b83\u5c06\u6bcf\u96941\u00a05\u5206\u949f\u8fd0\u884c\u4e00\u6b21\u3002<\/p>\n
\u540c\u65f6\uff0c\u65b0\u521b\u5efa\u6587\u4ef6\u7684\u4e00\u4e2a\u526f\u672c\u5df2\u7ecf\u88ab\u653e\u5728\/var\/spool\/cron\u76ee\u5f55\u4e2d\uff0c\u6587\u4ef6\u540d\u5c31\u662f\u7528\u6237\u540d(\u5373dave)\u3002<\/p>\n
2).\u00a0\u5217\u51facrontab\u6587\u4ef6<\/p>\n
\u4e3a\u4e86\u5217\u51facrontab\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528\uff1a<\/p>\n
$\u00a0crontab\u00a0-l<\/p>\n
0,15,30,45,18-06\u00a0*\u00a0*\u00a0*\u00a0\/bin\/echo\u00a0`date`\u00a0>\u00a0dev\/tty1<\/p>\n
\u4f60\u5c06\u4f1a\u770b\u5230\u548c\u4e0a\u9762\u7c7b\u4f3c\u7684\u5185\u5bb9\u3002\u53ef\u4ee5\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u5728$\u00a0H\u00a0O\u00a0M\u00a0E\u76ee\u5f55\u4e2d\u5bf9crontab\u6587\u4ef6\u505a\u4e00\u5907\u4efd\uff1a<\/p>\n
$\u00a0crontab\u00a0-l\u00a0>\u00a0$HOME\/mycron<\/p>\n
\u8fd9\u6837\uff0c\u4e00\u65e6\u4e0d\u5c0f\u5fc3\u8bef\u5220\u4e86crontab\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528\u4e0a\u4e00\u8282\u6240\u8bb2\u8ff0\u7684\u65b9\u6cd5\u8fc5\u901f\u6062\u590d\u3002<\/p>\n
3).\u00a0\u7f16\u8f91crontab\u6587\u4ef6<\/p>\n
\u5982\u679c\u5e0c\u671b\u6dfb\u52a0\u3001\u5220\u9664\u6216\u7f16\u8f91crontab\u6587\u4ef6\u4e2d\u7684\u6761\u76ee\uff0c\u800cE\u00a0D\u00a0I\u00a0TO\u00a0R\u73af\u5883\u53d8\u91cf\u53c8\u8bbe\u7f6e\u4e3av\u00a0i\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u7528v\u00a0i\u6765\u7f16\u8f91crontab\u6587\u4ef6\uff0c\u76f8\u5e94\u7684\u547d\u4ee4\u4e3a\uff1a<\/p>\n
$\u00a0crontab\u00a0-e<\/p>\n
\u53ef\u4ee5\u50cf\u4f7f\u7528v\u00a0i\u7f16\u8f91\u5176\u4ed6\u4efb\u4f55\u6587\u4ef6\u90a3\u6837\u4fee\u6539crontab\u6587\u4ef6\u5e76\u9000\u51fa\u3002\u5982\u679c\u4fee\u6539\u4e86\u67d0\u4e9b\u6761\u76ee\u6216\u6dfb\u52a0\u4e86\u65b0\u7684\u6761\u76ee\uff0c\u90a3\u4e48\u5728\u4fdd\u5b58\u8be5\u6587\u4ef6\u65f6\uff0c\u00a0c\u00a0r\u00a0o\u00a0n\u4f1a\u5bf9\u5176\u8fdb\u884c\u5fc5\u8981\u7684\u5b8c\u6574\u6027\u68c0\u67e5\u3002\u5982\u679c\u5176\u4e2d\u7684\u67d0\u4e2a\u57df\u51fa\u73b0\u4e86\u8d85\u51fa\u5141\u8bb8\u8303\u56f4\u7684\u503c\uff0c\u5b83\u4f1a\u63d0\u793a\u4f60\u3002<\/p>\n
\u6211\u4eec\u5728\u7f16\u8f91crontab\u6587\u4ef6\u65f6\uff0c\u6ca1\u51c6\u4f1a\u52a0\u5165\u65b0\u7684\u6761\u76ee\u3002\u4f8b\u5982\uff0c\u52a0\u5165\u4e0b\u9762\u7684\u4e00\u6761\uff1a<\/p>\n
#\u00a0DT:delete\u00a0core\u00a0files,at\u00a03.30am\u00a0on\u00a01,7,14,21,26,26\u00a0days\u00a0of\u00a0each\u00a0month<\/p>\n
30\u00a03\u00a01,7,14,21,26\u00a0*\u00a0*\u00a0\/bin\/find\u00a0-name\u00a0\"core'\u00a0-exec\u00a0rm\u00a0{}\u00a0;<\/p>\n
\u73b0\u5728\u4fdd\u5b58\u5e76\u9000\u51fa\u3002\u6700\u597d\u5728crontab\u6587\u4ef6\u7684\u6bcf\u4e00\u4e2a\u6761\u76ee\u4e4b\u4e0a\u52a0\u5165\u4e00\u6761\u6ce8\u91ca\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u77e5\u9053\u5b83\u7684\u529f\u80fd\u3001\u8fd0\u884c\u65f6\u95f4\uff0c\u66f4\u4e3a\u91cd\u8981\u7684\u662f\uff0c\u77e5\u9053\u8fd9\u662f\u54ea\u4f4d\u7528\u6237\u7684\u4f5c\u4e1a\u3002<\/p>\n
\u73b0\u5728\u8ba9\u6211\u4eec\u4f7f\u7528\u524d\u9762\u8bb2\u8fc7\u7684crontab\u00a0-l\u547d\u4ee4\u5217\u51fa\u5b83\u7684\u5168\u90e8\u4fe1\u606f\uff1a<\/p>\n
$\u00a0crontab\u00a0-l<\/p>\n
#\u00a0(crondave\u00a0installed\u00a0on\u00a0Tue\u00a0May\u00a04\u00a013:07:43\u00a01999)<\/p>\n
#\u00a0DT:ech\u00a0the\u00a0date\u00a0to\u00a0the\u00a0console\u00a0every\u00a030\u00a0minites<\/p>\n
0,15,30,45\u00a018-06\u00a0*\u00a0*\u00a0*\u00a0\/bin\/echo\u00a0`date`\u00a0>\u00a0\/dev\/tty1<\/p>\n
#\u00a0DT:delete\u00a0core\u00a0files,at\u00a03.30am\u00a0on\u00a01,7,14,21,26,26\u00a0days\u00a0of\u00a0each\u00a0month<\/p>\n
30\u00a03\u00a01,7,14,21,26\u00a0*\u00a0*\u00a0\/bin\/find\u00a0-name\u00a0\"core'\u00a0-exec\u00a0rm\u00a0{}\u00a0;<\/p>\n
4).\u00a0\u5220\u9664crontab\u6587\u4ef6<\/p>\n
\u8981\u5220\u9664crontab\u6587\u4ef6\uff0c\u53ef\u4ee5\u7528\uff1a<\/p>\n
$\u00a0crontab\u00a0-r<\/p>\n
5).\u00a0\u6062\u590d\u4e22\u5931\u7684crontab\u6587\u4ef6<\/p>\n
\u5982\u679c\u4e0d\u5c0f\u5fc3\u8bef\u5220\u4e86crontab\u6587\u4ef6\uff0c\u5047\u8bbe\u4f60\u5728\u81ea\u5df1\u7684$\u00a0H\u00a0O\u00a0M\u00a0E\u76ee\u5f55\u4e0b\u8fd8\u6709\u4e00\u4e2a\u5907\u4efd\uff0c\u90a3\u4e48\u53ef\u4ee5\u5c06\u5176\u62f7\u8d1d\u5230\/var\/spool\/cron\/<username>\uff0c\u5176\u4e2d<username>\u662f\u7528\u6237\u540d\u3002\u5982\u679c\u7531\u4e8e\u6743\u9650\u95ee\u9898\u65e0\u6cd5\u5b8c\u6210\u62f7\u8d1d\uff0c\u53ef\u4ee5\u7528\uff1a<\/p>\n
$\u00a0crontab\u00a0<filename><\/p>\n
\u5176\u4e2d\uff0c<filename>\u662f\u4f60\u5728$\u00a0H\u00a0O\u00a0M\u00a0E\u76ee\u5f55\u4e2d\u526f\u672c\u7684\u6587\u4ef6\u540d\u3002<\/p>\n
\u6211\u5efa\u8bae\u4f60\u5728\u81ea\u5df1\u7684$\u00a0H\u00a0O\u00a0M\u00a0E\u76ee\u5f55\u4e2d\u4fdd\u5b58\u4e00\u4e2a\u8be5\u6587\u4ef6\u7684\u526f\u672c\u3002\u6211\u5c31\u6709\u8fc7\u7c7b\u4f3c\u7684\u7ecf\u5386\uff0c\u6709\u6570\u6b21\u8bef\u5220\u4e86crontab\u6587\u4ef6\uff08\u56e0\u4e3ar\u952e\u7d27\u6328\u5728e\u952e\u7684\u53f3\u8fb9\uff09\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u6709\u4e9b\u7cfb\u7edf\u6587\u6863\u5efa\u8bae\u4e0d\u8981\u76f4\u63a5\u7f16\u8f91crontab\u6587\u4ef6\uff0c\u800c\u662f\u7f16\u8f91\u8be5\u6587\u4ef6\u7684\u4e00\u4e2a\u526f\u672c\uff0c\u7136\u540e\u91cd\u65b0\u63d0\u4ea4\u65b0\u7684\u6587\u4ef6\u3002<\/p>\n
\u6709\u4e9bcrontab\u7684\u53d8\u4f53\u6709\u4e9b\u602a\u5f02\uff0c\u6240\u4ee5\u5728\u4f7f\u7528crontab\u547d\u4ee4\u65f6\u8981\u683c\u5916\u5c0f\u5fc3\u3002\u5982\u679c\u9057\u6f0f\u4e86\u4efb\u4f55\u9009\u9879\uff0ccrontab\u53ef\u80fd\u4f1a\u6253\u5f00\u4e00\u4e2a\u7a7a\u6587\u4ef6\uff0c\u6216\u8005\u770b\u8d77\u6765\u50cf\u662f\u4e2a\u7a7a\u6587\u4ef6\u3002\u8fd9\u65f6\u6572delete\u952e\u9000\u51fa\uff0c\u4e0d\u8981\u6309<Ctrl-D>\uff0c\u5426\u5219\u4f60\u5c06\u4e22\u5931crontab\u6587\u4ef6\u3002<\/p>\n
5\uff0e\u4f7f\u7528\u5b9e\u4f8b<\/p>\n
\u5b9e\u4f8b1\uff1a\u6bcf1\u5206\u949f\u6267\u884c\u4e00\u6b21command<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
*\u00a0*\u00a0*\u00a0*\u00a0*\u00a0command<\/p>\n
<\/p>\n
\u5b9e\u4f8b2\uff1a\u6bcf\u5c0f\u65f6\u7684\u7b2c3\u548c\u7b2c15\u5206\u949f\u6267\u884c<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
3,15\u00a0*\u00a0*\u00a0*\u00a0*\u00a0command<\/p>\n
<\/p>\n
\u5b9e\u4f8b3\uff1a\u5728\u4e0a\u53488\u70b9\u523011\u70b9\u7684\u7b2c3\u548c\u7b2c15\u5206\u949f\u6267\u884c<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
3,15\u00a08-11\u00a0*\u00a0*\u00a0*\u00a0command<\/p>\n
<\/p>\n
\u5b9e\u4f8b4\uff1a\u6bcf\u9694\u4e24\u5929\u7684\u4e0a\u53488\u70b9\u523011\u70b9\u7684\u7b2c3\u548c\u7b2c15\u5206\u949f\u6267\u884c<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
3,15\u00a08-11\u00a0*\/2\u00a0*\u00a0*\u00a0command<\/p>\n
<\/p>\n
\u5b9e\u4f8b5\uff1a\u6bcf\u4e2a\u661f\u671f\u4e00\u7684\u4e0a\u53488\u70b9\u523011\u70b9\u7684\u7b2c3\u548c\u7b2c15\u5206\u949f\u6267\u884c<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
3,15\u00a08-11\u00a0*\u00a0*\u00a01\u00a0command<\/p>\n
<\/p>\n
\u5b9e\u4f8b6\uff1a\u6bcf\u665a\u768421:30\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
30\u00a021\u00a0*\u00a0*\u00a0*\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b7\uff1a\u6bcf\u67081\u300110\u300122\u65e5\u76844\u00a0:\u00a045\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
45\u00a04\u00a01,10,22\u00a0*\u00a0*\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b8\uff1a\u6bcf\u5468\u516d\u3001\u5468\u65e5\u76841\u00a0:\u00a010\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
10\u00a01\u00a0*\u00a0*\u00a06,0\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b9\uff1a\u6bcf\u592918\u00a0:\u00a000\u81f323\u00a0:\u00a000\u4e4b\u95f4\u6bcf\u969430\u5206\u949f\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
0,30\u00a018-23\u00a0*\u00a0*\u00a0*\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b10\uff1a\u6bcf\u661f\u671f\u516d\u7684\u665a\u4e0a11\u00a0:\u00a000\u00a0pm\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
0\u00a023\u00a0*\u00a0*\u00a06\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b11\uff1a\u6bcf\u4e00\u5c0f\u65f6\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
*\u00a0*\/1\u00a0*\u00a0*\u00a0*\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b12\uff1a\u665a\u4e0a11\u70b9\u5230\u65e9\u4e0a7\u70b9\u4e4b\u95f4\uff0c\u6bcf\u9694\u4e00\u5c0f\u65f6\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
*\u00a023-7\/1\u00a0*\u00a0*\u00a0*\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b13\uff1a\u6bcf\u6708\u76844\u53f7\u4e0e\u6bcf\u5468\u4e00\u5230\u5468\u4e09\u768411\u70b9\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
0\u00a011\u00a04\u00a0*\u00a0mon-wed\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
<\/p>\n
\u5b9e\u4f8b14\uff1a\u4e00\u6708\u4e00\u53f7\u76844\u70b9\u91cd\u542fsmb<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
0\u00a04\u00a01\u00a0jan\u00a0*\u00a0\/etc\/init.d\/smb\u00a0restart<\/p>\n
\u5b9e\u4f8b15\uff1a\u6bcf\u5c0f\u65f6\u6267\u884c\/etc\/cron.hourly\u76ee\u5f55\u5185\u7684\u811a\u672c<\/p>\n
\u547d\u4ee4\uff1a<\/p>\n
01\u00a0\u00a0\u00a0*\u00a0\u00a0\u00a0*\u00a0\u00a0\u00a0*\u00a0\u00a0\u00a0*\u00a0\u00a0\u00a0\u00a0\u00a0root\u00a0run-parts\u00a0\/etc\/cron.hourly<\/p>\n
\u8bf4\u660e\uff1a<\/p>\n
run-parts\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\u76ee\u5f55\u540d\u4e86<\/p>\n
\u56db\u3001\u4f7f\u7528\u6ce8\u610f\u4e8b\u9879<\/p>\n
1.\u00a0\u6ce8\u610f\u73af\u5883\u53d8\u91cf\u95ee\u9898<\/p>\n
\u6709\u65f6\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2acrontab\uff0c\u4f46\u662f\u8fd9\u4e2a\u4efb\u52a1\u5374\u65e0\u6cd5\u81ea\u52a8\u6267\u884c\uff0c\u800c\u624b\u52a8\u6267\u884c\u8fd9\u4e2a\u4efb\u52a1\u5374\u6ca1\u6709\u95ee\u9898\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e00\u822c\u662f\u7531\u4e8e\u5728crontab\u6587\u4ef6\u4e2d\u6ca1\u6709\u914d\u7f6e\u73af\u5883\u53d8\u91cf\u5f15\u8d77\u7684\u3002<\/p>\n
\u5728crontab\u6587\u4ef6\u4e2d\u5b9a\u4e49\u591a\u4e2a\u8c03\u5ea6\u4efb\u52a1\u65f6\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\u7684\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\u73af\u5883\u53d8\u91cf\u7684\u8bbe\u7f6e\uff0c\u56e0\u4e3a\u6211\u4eec\u624b\u52a8\u6267\u884c\u67d0\u4e2a\u4efb\u52a1\u65f6\uff0c\u662f\u5728\u5f53\u524dshell\u73af\u5883\u4e0b\u8fdb\u884c\u7684\uff0c\u7a0b\u5e8f\u5f53\u7136\u80fd\u627e\u5230\u73af\u5883\u53d8\u91cf\uff0c\u800c\u7cfb\u7edf\u81ea\u52a8\u6267\u884c\u4efb\u52a1\u8c03\u5ea6\u65f6\uff0c\u662f\u4e0d\u4f1a\u52a0\u8f7d\u4efb\u4f55\u73af\u5883\u53d8\u91cf\u7684\uff0c\u56e0\u6b64\uff0c\u5c31\u9700\u8981\u5728crontab\u6587\u4ef6\u4e2d\u6307\u5b9a\u4efb\u52a1\u8fd0\u884c\u6240\u9700\u7684\u6240\u6709\u73af\u5883\u53d8\u91cf\uff0c\u8fd9\u6837\uff0c\u7cfb\u7edf\u6267\u884c\u4efb\u52a1\u8c03\u5ea6\u65f6\u5c31\u6ca1\u6709\u95ee\u9898\u4e86\u3002<\/p>\n
\u4e0d\u8981\u5047\u5b9acron\u77e5\u9053\u6240\u9700\u8981\u7684\u7279\u6b8a\u73af\u5883\uff0c\u5b83\u5176\u5b9e\u5e76\u4e0d\u77e5\u9053\u3002\u6240\u4ee5\u4f60\u8981\u4fdd\u8bc1\u5728shelll\u811a\u672c\u4e2d\u63d0\u4f9b\u6240\u6709\u5fc5\u8981\u7684\u8def\u5f84\u548c\u73af\u5883\u53d8\u91cf\uff0c\u9664\u4e86\u4e00\u4e9b\u81ea\u52a8\u8bbe\u7f6e\u7684\u5168\u5c40\u53d8\u91cf\u3002\u6240\u4ee5\u6ce8\u610f\u5982\u4e0b3\u70b9\uff1a<\/p>\n
1\uff09\u811a\u672c\u4e2d\u6d89\u53ca\u6587\u4ef6\u8def\u5f84\u65f6\u5199\u5168\u5c40\u8def\u5f84\uff1b<\/p>\n
2\uff09\u811a\u672c\u6267\u884c\u8981\u7528\u5230java\u6216\u5176\u4ed6\u73af\u5883\u53d8\u91cf\u65f6\uff0c\u901a\u8fc7source\u547d\u4ee4\u5f15\u5165\u73af\u5883\u53d8\u91cf\uff0c\u5982\uff1a<\/p>\n
cat\u00a0start_cbp.sh<\/p>\n
#!\/bin\/sh<\/p>\n
source\u00a0\/etc\/profile<\/p>\n
export\u00a0RUN_CONF=\/home\/d139\/conf\/platform\/cbp\/cbp_jboss.conf<\/p>\n
\/usr\/local\/jboss-4.0.5\/bin\/run.sh\u00a0-c\u00a0mev\u00a0&<\/p>\n
3\uff09\u5f53\u624b\u52a8\u6267\u884c\u811a\u672cOK\uff0c\u4f46\u662fcrontab\u6b7b\u6d3b\u4e0d\u6267\u884c\u65f6\u3002\u8fd9\u65f6\u5fc5\u987b\u5927\u80c6\u6000\u7591\u662f\u73af\u5883\u53d8\u91cf\u60f9\u7684\u7978\uff0c\u5e76\u53ef\u4ee5\u5c1d\u8bd5\u5728crontab\u4e2d\u76f4\u63a5\u5f15\u5165\u73af\u5883\u53d8\u91cf\u89e3\u51b3\u95ee\u9898\u3002\u5982\uff1a<\/p>\n
0\u00a0*\u00a0*\u00a0*\u00a0*\u00a0.\u00a0\/etc\/profile;\/bin\/sh\u00a0\/var\/www\/java\/audit_no_count\/bin\/restart_audit.sh<\/p>\n
2.\u00a0\u6ce8\u610f\u6e05\u7406\u7cfb\u7edf\u7528\u6237\u7684\u90ae\u4ef6\u65e5\u5fd7<\/p>\n
\u6bcf\u6761\u4efb\u52a1\u8c03\u5ea6\u6267\u884c\u5b8c\u6bd5\uff0c\u7cfb\u7edf\u90fd\u4f1a\u5c06\u4efb\u52a1\u8f93\u51fa\u4fe1\u606f\u901a\u8fc7\u7535\u5b50\u90ae\u4ef6\u7684\u5f62\u5f0f\u53d1\u9001\u7ed9\u5f53\u524d\u7cfb\u7edf\u7528\u6237\uff0c\u8fd9\u6837\u65e5\u79ef\u6708\u7d2f\uff0c\u65e5\u5fd7\u4fe1\u606f\u4f1a\u975e\u5e38\u5927\uff0c\u53ef\u80fd\u4f1a\u5f71\u54cd\u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\uff0c\u56e0\u6b64\uff0c\u5c06\u6bcf\u6761\u4efb\u52a1\u8fdb\u884c\u91cd\u5b9a\u5411\u5904\u7406\u975e\u5e38\u91cd\u8981\u3002<\/p>\n
\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728crontab\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u5982\u4e0b\u5f62\u5f0f\uff0c\u5ffd\u7565\u65e5\u5fd7\u8f93\u51fa\uff1a<\/p>\n
0\u00a0*\/3\u00a0*\u00a0*\u00a0*\u00a0\/usr\/local\/apache2\/apachectl\u00a0restart\u00a0>\/dev\/null\u00a02>&1<\/p>\n
\u201c\/dev\/null\u00a02>&1\u201d\u8868\u793a\u5148\u5c06\u6807\u51c6\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\/dev\/null\uff0c\u7136\u540e\u5c06\u6807\u51c6\u9519\u8bef\u91cd\u5b9a\u5411\u5230\u6807\u51c6\u8f93\u51fa\uff0c\u7531\u4e8e\u6807\u51c6\u8f93\u51fa\u5df2\u7ecf\u91cd\u5b9a\u5411\u5230\u4e86\/dev\/null\uff0c\u56e0\u6b64\u6807\u51c6\u9519\u8bef\u4e5f\u4f1a\u91cd\u5b9a\u5411\u5230\/dev\/null\uff0c\u8fd9\u6837\u65e5\u5fd7\u8f93\u51fa\u95ee\u9898\u5c31\u89e3\u51b3\u4e86\u3002<\/p>\n
3.\u00a0\u7cfb\u7edf\u7ea7\u4efb\u52a1\u8c03\u5ea6\u4e0e\u7528\u6237\u7ea7\u4efb\u52a1\u8c03\u5ea6<\/p>\n
\u7cfb\u7edf\u7ea7\u4efb\u52a1\u8c03\u5ea6\u4e3b\u8981\u5b8c\u6210\u7cfb\u7edf\u7684\u4e00\u4e9b\u7ef4\u62a4\u64cd\u4f5c\uff0c\u7528\u6237\u7ea7\u4efb\u52a1\u8c03\u5ea6\u4e3b\u8981\u5b8c\u6210\u7528\u6237\u81ea\u5b9a\u4e49\u7684\u4e00\u4e9b\u4efb\u52a1\uff0c\u53ef\u4ee5\u5c06\u7528\u6237\u7ea7\u4efb\u52a1\u8c03\u5ea6\u653e\u5230\u7cfb\u7edf\u7ea7\u4efb\u52a1\u8c03\u5ea6\u6765\u5b8c\u6210\uff08\u4e0d\u5efa\u8bae\u8fd9\u4e48\u505a\uff09\uff0c\u4f46\u662f\u53cd\u8fc7\u6765\u5374\u4e0d\u884c\uff0croot\u7528\u6237\u7684\u4efb\u52a1\u8c03\u5ea6\u64cd\u4f5c\u53ef\u4ee5\u901a\u8fc7\u201ccrontab\u00a0\u2013uroot\u00a0\u2013e\u201d\u6765\u8bbe\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u5c06\u8c03\u5ea6\u4efb\u52a1\u76f4\u63a5\u5199\u5165\/etc\/crontab\u6587\u4ef6\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u8981\u5b9a\u4e49\u4e00\u4e2a\u5b9a\u65f6\u91cd\u542f\u7cfb\u7edf\u7684\u4efb\u52a1\uff0c\u5c31\u5fc5\u987b\u5c06\u4efb\u52a1\u653e\u5230\/etc\/crontab\u6587\u4ef6\uff0c\u5373\u4f7f\u5728root\u7528\u6237\u4e0b\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u91cd\u542f\u7cfb\u7edf\u7684\u4efb\u52a1\u4e5f\u662f\u65e0\u6548\u7684\u3002<\/p>\n
4.\u00a0\u5176\u4ed6\u6ce8\u610f\u4e8b\u9879<\/p>\n
\u65b0\u521b\u5efa\u7684cron\u00a0job\uff0c\u4e0d\u4f1a\u9a6c\u4e0a\u6267\u884c\uff0c\u81f3\u5c11\u8981\u8fc72\u5206\u949f\u624d\u6267\u884c\u3002\u5982\u679c\u91cd\u542fcron\u5219\u9a6c\u4e0a\u6267\u884c\u3002<\/p>\n
\u5f53crontab\u7a81\u7136\u5931\u6548\u65f6\uff0c\u53ef\u4ee5\u5c1d\u8bd5\/etc\/init.d\/crond\u00a0restart\u89e3\u51b3\u95ee\u9898\u3002\u6216\u8005\u67e5\u770b\u65e5\u5fd7\u770b\u67d0\u4e2ajob\u6709\u6ca1\u6709\u6267\u884c\/\u62a5\u9519tail\u00a0-f\u00a0\/var\/log\/cron\u3002<\/p>\n
\u5343\u4e07\u522b\u4e71\u8fd0\u884ccrontab\u00a0-r\u3002\u5b83\u4eceCrontab\u76ee\u5f55\uff08\/var\/spool\/cron\uff09\u4e2d\u5220\u9664\u7528\u6237\u7684Crontab\u6587\u4ef6\u3002\u5220\u9664\u4e86\u8be5\u7528\u6237\u7684\u6240\u6709crontab\u90fd\u6ca1\u4e86\u3002<\/p>\n
\u5728crontab\u4e2d%\u662f\u6709\u7279\u6b8a\u542b\u4e49\u7684\uff0c\u8868\u793a\u6362\u884c\u7684\u610f\u601d\u3002\u5982\u679c\u8981\u7528\u7684\u8bdd\u5fc5\u987b\u8fdb\u884c\u8f6c\u4e49%\uff0c\u5982\u7ecf\u5e38\u7528\u7684date\u00a0\u2018+%Y%m%d\u2019\u5728crontab\u91cc\u662f\u4e0d\u4f1a\u6267\u884c\u7684\uff0c\u5e94\u8be5\u6362\u6210date\u00a0\u2018+%Y%m%d\u2019\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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