linux\u4e0b\u7684crontab\u670d\u52a1\uff1a<\/p>\n\n\n\n
1\u3001crontab \u662f\u7528\u6765\u8ba9\u4f7f\u7528\u8005\u5728\u56fa\u5b9a\u65f6\u95f4\u6216\u56fa\u5b9a\u95f4\u9694\u6267\u884c\u7a0b\u5e8f\u4e4b\u7528<\/p>\n\n\n\n
\u5728linux\u5e73\u53f0\u4e0a\u5982\u679c\u9700\u8981\u5b9e\u73b0\u4efb\u52a1\u8c03\u5ea6\u529f\u80fd\u53ef\u4ee5\u7f16\u5199cron\u811a\u672c\u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n
\u4ee5\u67d0\u4e00\u9891\u7387\u6267\u884c\u4efb\u52a1<\/p>\n\n\n\n
linux\u7f3a\u7701\u4f1a\u542f\u52a8crond\u8fdb\u7a0b\uff0ccrond\u8fdb\u7a0b\u4e0d\u9700\u8981\u7528\u6237\u542f\u52a8\u3001\u5173\u95ed\u3002<\/p>\n\n\n\n
crond\u8fdb\u7a0b\u8d1f\u8d23\u8bfb\u53d6\u8c03\u5ea6\u4efb\u52a1\u5e76\u6267\u884c\uff0c\u7528\u6237\u53ea\u9700\u8981\u5c06\u76f8\u5e94\u7684\u8c03\u5ea6\u811a\u672c\u5199\u5165cron\u7684\u8c03\u5ea6\u914d\u7f6e\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n
cron\u7684\u8c03\u5ea6\u6587\u4ef6\u6709\u4ee5\u4e0b\u51e0\u4e2a\uff1a<\/p>\n\n\n\n
1. crontab<\/p>\n\n\n\n
2. cron.d<\/p>\n\n\n\n
3. cron.daily<\/p>\n\n\n\n
4. cron.hourly<\/p>\n\n\n\n
5. cron.monthly<\/p>\n\n\n\n
6. cron.weekly<\/p>\n\n\n\n
\u5982\u679c\u7528\u7684\u4efb\u52a1\u4e0d\u662f\u4ee5hourly monthly weekly\u65b9\u5f0f\u6267\u884c\uff0c\u5219\u53ef\u4ee5\u5c06\u76f8\u5e94\u7684crontab\u5199\u5165\u5230crontab \u6216cron.d\u76ee\u5f55\u4e2d\u3002<\/p>\n\n\n\n
\u793a\u4f8b\uff1a<\/p>\n\n\n\n
\u6bcf\u9694\u4e00\u5206\u949f\u6267\u884c\u4e00\u6b21\u811a\u672c \/opt\/bin\/test-cron.sh<\/p>\n\n\n\n
\u53ef\u4ee5\u5728cron.d\u65b0\u5efa\u811a\u672c echo-date.sh<\/p>\n\n\n\n
\u5185\u5bb9\u4e3a<\/p>\n\n\n\n
*\/1 * * * * root \/opt\/bin\/test-cron.sh<\/p>\n\n\n\n
2\u3001cron\u662f\u4e00\u4e2alinux\u4e0b\u7684\u5b9a\u65f6\u6267\u884c\u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u65e0\u9700\u4eba\u5de5\u5e72\u9884\u7684\u60c5\u51b5\u4e0b\u8fd0\u884c\u4f5c\u4e1a\u3002\u7531\u4e8eCron \u662fLinux\u7684\u5185\u7f6e\u670d\u52a1\uff0c\u5982\u679c\u5b83\u4e0d\u81ea\u52a8\u8d77\u6765\uff0c\u53ef\u4ee5\u7528\u4ee5\u4e0b\u7684\u65b9\u6cd5\u542f\u52a8\u3001\u5173\u95ed\u8fd9\u4e2a\u670d\u52a1\uff1a<\/p>\n\n\n\n
\/sbin\/service crond start \/\/\u542f\u52a8\u670d\u52a1<\/p>\n\n\n\n
\/sbin\/service crond stop \/\/\u5173\u95ed\u670d\u52a1<\/p>\n\n\n\n
\/sbin\/service crond restart \/\/\u91cd\u542f\u670d\u52a1<\/p>\n\n\n\n
\/sbin\/service crond reload \/\/\u91cd\u65b0\u8f7d\u5165\u914d\u7f6e<\/p>\n\n\n\n
\u4f60\u4e5f\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u670d\u52a1\u5728\u7cfb\u7edf\u542f\u52a8\u7684\u65f6\u5019\u81ea\u52a8\u542f\u52a8\uff1a<\/p>\n\n\n\n
\u5728\/etc\/rc.d\/rc.local\u8fd9\u4e2a\u811a\u672c\u7684\u672b\u5c3e\u52a0\u4e0a\uff1a<\/p>\n\n\n\n
\/sbin\/service crond start<\/p>\n\n\n\n
\u73b0\u5728Cron\u8fd9\u4e2a\u670d\u52a1\u5df2\u7ecf\u5728\u8fdb\u7a0b\u91cc\u9762\u4e86\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u7528\u8fd9\u4e2a\u670d\u52a1\u4e86<\/p>\n\n\n\n
\u67e5\u770b\u670d\u52a1\u662f\u5426\u5df2\u7ecf\u8fd0\u884c\u7528 ps -ax | grep cron<\/p>\n\n\n\n
3\u3001crontab\u547d\u4ee4<\/p>\n\n\n\n
\u67e5\u770b\u8be5\u7528\u6237\u4e0b\u7684crontab\u670d\u52a1\u662f\u5426\u521b\u5efa\u6210\u529f\uff0c \u7528 crontab -l \u547d\u4ee4<\/p>\n\n\n\n
\u547d\u4ee4 which php \u67e5\u770blinux\u4e0b\u5b89\u88c5\u7684php\u7684\u8def\u5f84<\/p>\n\n\n\n
cron\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\n\n\n
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<\/p>\n\n\n\n
crontab -l \/\/\u5217\u51fa\u67d0\u4e2a\u7528\u6237cron\u670d\u52a1\u7684\u8be6\u7ec6\u5185\u5bb9<\/p>\n\n\n\n
crontab -r \/\/\u5220\u9664\u6ca1\u4e2a\u7528\u6237\u7684cron\u670d\u52a1<\/p>\n\n\n\n
crontab -e \/\/\u7f16\u8f91\u67d0\u4e2a\u7528\u6237\u7684cron\u670d\u52a1<\/p>\n\n\n\n
\u6bd4\u5982\u8bf4root\u67e5\u770b\u81ea\u5df1\u7684cron\u8bbe\u7f6e:crontab -u root -l<\/p>\n\n\n\n
\u518d\u4f8b\u5982\uff0croot\u60f3\u5220\u9664fred\u7684cron\u8bbe\u7f6e:crontab -u fred -r<\/p>\n\n\n\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<\/p>\n\n\n\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<\/p>\n\n\n\n
\u4efb\u52a1\u8c03\u5ea6\u7684crond\u5e38\u9a7b\u547d\u4ee4crond \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 \u4efb\u52a1\u8c03\u5ea6\u547d\u4ee4\u3002crond\u547d\u4ee4\u6bcf\u5206\u949f\u4f1a\u5b9a\u671f\u68c0\u67e5\u662f\u5426\u6709\u8981\u6267\u884c\u7684\u5de5\u4f5c\uff0c\u5982\u679c\u6709\u8981\u6267\u884c\u7684\u5de5\u4f5c\u4fbf\u4f1a\u81ea\u52a8\u6267\u884c\u8be5\u5de5\u4f5c\u3002<\/p>\n\n\n\n
crontab\u547d\u4ee4\u9009\u9879:<\/p>\n\n\n\n
-u\u6307\u5b9a\u4e00\u4e2a\u7528\u6237<\/p>\n\n\n\n
-l\u5217\u51fa\u67d0\u4e2a\u7528\u6237\u7684\u4efb\u52a1\u8ba1\u5212<\/p>\n\n\n\n
-r\u5220\u9664\u67d0\u4e2a\u7528\u6237\u7684\u4efb\u52a1<\/p>\n\n\n\n
-e\u7f16\u8f91\u67d0\u4e2a\u7528\u6237\u7684\u4efb\u52a1<\/p>\n\n\n\n
4\u3001cron\u6587\u4ef6\u8bed\u6cd5:<\/p>\n\n\n\n
\u5206 \u5c0f\u65f6 \u65e5 \u6708 \u661f\u671f \u547d\u4ee4<\/p>\n\n\n\n
0-59 0-23 1-31 1-12 0-6 command (\u53d6\u503c\u8303\u56f4,0\u8868\u793a\u5468\u65e5\u4e00\u822c\u4e00\u884c\u5bf9\u5e94\u4e00\u4e2a\u4efb\u52a1)<\/p>\n\n\n\n
\u8bb0\u4f4f\u51e0\u4e2a\u7279\u6b8a\u7b26\u53f7\u7684\u542b\u4e49:<\/p>\n\n\n\n
\u201c*\u201d\u4ee3\u8868\u53d6\u503c\u8303\u56f4\u5185\u7684\u6570\u5b57,<\/p>\n\n\n\n
\u201c\/\u201d\u4ee3\u8868\u201d\u6bcf\u201d,<\/p>\n\n\n\n
\u201c-\u201d\u4ee3\u8868\u4ece\u67d0\u4e2a\u6570\u5b57\u5230\u67d0\u4e2a\u6570\u5b57,<\/p>\n\n\n\n
\u201c,\u201d\u5206\u5f00\u51e0\u4e2a\u79bb\u6563\u7684\u6570\u5b57<\/p>\n\n\n\n
5\u3001 \u65b0\u589e\u8c03\u5ea6\u4efb\u52a1<\/p>\n\n\n\n
\u65b0\u589e\u8c03\u5ea6\u4efb\u52a1\u53ef\u7528\u4e24\u79cd\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
1)\u3001\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\n\n\n
2)\u3001\u76f4\u63a5\u7f16\u8f91\/etc\/crontab \u6587\u4ef6\uff0c\u5373vi \/etc\/crontab\uff0c\u6dfb\u52a0\u76f8\u5e94\u7684\u4efb\u52a1\u3002<\/p>\n\n\n\n
6\u3001 \u67e5\u770b\u8c03\u5ea6\u4efb\u52a1<\/p>\n\n\n\n
crontab -l \/\/\u5217\u51fa\u5f53\u524d\u7684\u6240\u6709\u8c03\u5ea6\u4efb\u52a1<\/p>\n\n\n\n
crontab -l -u jp \/\/\u5217\u51fa\u7528\u6237jp\u7684\u6240\u6709\u8c03\u5ea6\u4efb\u52a1<\/p>\n\n\n\n
7\u3001 \u5220\u9664\u4efb\u52a1\u8c03\u5ea6\u5de5\u4f5c<\/p>\n\n\n\n
crontab -r \/\/\u5220\u9664\u6240\u6709\u4efb\u52a1\u8c03\u5ea6\u5de5\u4f5c<\/p>\n\n\n\n
8\u3001 \u4efb\u52a1\u8c03\u5ea6\u6267\u884c\u7ed3\u679c\u7684\u8f6c\u5411<\/p>\n\n\n\n
\u4f8b1\uff1a\u6bcf\u59295\uff1a30\u6267\u884cls\u547d\u4ee4\uff0c\u5e76\u628a\u7ed3\u679c\u8f93\u51fa\u5230\/jp\/test\u6587\u4ef6\u4e2d<\/p>\n\n\n\n
30 5 * * * ls >\/jp\/test 2>&1<\/p>\n\n\n\n
\u6ce8\uff1a2>&1 \u8868\u793a\u6267\u884c\u7ed3\u679c\u53ca\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n\n\n\n
\u7f16\u8f91\/etc\/crontab \u6587\u4ef6\u914d\u7f6ecron<\/p>\n\n\n\n
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 \/etc\/crontab,\u56e0\u6b64\u6211\u4eec\u914d\u7f6e\u8fd9\u4e2a\u6587\u4ef6\u4e5f\u80fd\u8fd0\u7528cron\u670d\u52a1\u505a\u4e00\u4e9b\u4e8b\u60c5\u3002<\/p>\n\n\n\n
\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\n\n\n
SHELL=\/bin\/bash<\/p>\n\n\n\n
PATH=\/sbin:\/bin:\/usr\/sbin:\/usr\/bin<\/p>\n\n\n\n
MAILTO=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\n\n\n
HOME=\/ \/\/\u4f7f\u7528\u8005\u8fd0\u884c\u7684\u8def\u5f84,\u8fd9\u91cc\u662f\u6839\u76ee\u5f55<\/p>\n\n\n\n
# run-parts<\/p>\n\n\n\n
01 * * * * root run-parts \/etc\/cron.hourly \/\/\u6bcf\u5c0f\u65f6\u6267\u884c\/etc\/cron.hourly\u5185\u7684\u811a\u672c<\/p>\n\n\n\n
02 4 * * * root run-parts \/etc\/cron.daily \/\/\u6bcf\u5929\u6267\u884c\/etc\/cron.daily\u5185\u7684\u811a\u672c<\/p>\n\n\n\n
22 4 * * 0 root run-parts \/etc\/cron.weekly \/\/\u6bcf\u661f\u671f\u6267\u884c \/etc\/cron.weekly\u5185\u7684\u811a\u672c<\/p>\n\n\n\n
42 4 1 * * root run-parts \/etc\/cron.monthly \/\/\u6bcf\u6708\u53bb\u6267\u884c\/etc\/cron.monthly\u5185\u7684\u811a\u672c<\/p>\n\n\n\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\u3002<\/p>\n\n\n\n
\u4f8b\u5982\uff1a<\/p>\n\n\n\n
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\n\n\n
2)\u76f4\u63a5\u7f16\u8f91\/etc\/crontab \u6587\u4ef6\uff0c\u5373vi \/etc\/crontab\uff0c\u6dfb\u52a0\u76f8\u5e94\u7684\u4efb\u52a1<\/p>\n\n\n\n
11 2 21 10 * rm -rf \/mnt\/fb<\/p>\n\n\n\n
\u603b\u7ed3\uff1a<\/p>\n\n\n\n
\u7f16\u5199\u5b9a\u65f6\u4efb\u52a1\u7684\u4e24\u79cd\u65b9\u5f0f\uff1a1.sudo vim \/etc\/crontab 2. sudo crontab -e<\/p>\n\n\n\n
\u67e5\u770b\u5b9a\u65f6\u4efb\u52a1\u7684\u4e24\u79cd\u65b9\u5f0f\uff1a1.sudo cat \/etc\/crontab 2.sudo crontab -l<\/p>\n\n\n\n
*\/1 * * * * appuser cd \/app\/webserver\/website\/api-cb.chuchujie.com\/master\/current\/script\/ && .\/back_coupon.sh 2 10 >> \/dev\/null 2>&1<\/p>\n\n\n\n
\u67e5\u770b\u5b9a\u65f6\u4efb\u52a1\u662f\u5426\u8fd0\u884c\uff1a<\/p>\n\n\n\n
sudo tail -f \/var\/log\/cron \/\/\u5b9a\u65f6\u4efb\u52a1\u65e5\u5fd7(\u67e5\u770b\u521a\u624d\u8bbe\u7f6e\u7684\u4efb\u52a1\u662f\u5426\u6267\u884c)<\/p>\n\n\n\n
\u6ce8\uff1a\u811a\u672c\u6709\u53ef\u6267\u884c\u6743\u9650<\/p>\n\n\n\n
sh a.sh(\u4e0d\u9700\u8981\u6267\u884c\u6743\u9650)<\/p>\n\n\n\n
.\/sh (\u9700\u8981\u6267\u884c\u6743\u9650)<\/p>\n\n\n\n
1.\u5f53shell\u811a\u672c\u5177\u6709\u53ef\u6267\u884c\u6743\u9650\u65f6\uff0c\u7528sh filename\u4e0e.\/filename\u6267\u884c\u811a\u672c\u662f\u6ca1\u6709\u533a\u522b\u7684\u3002.\/filename\u662f\u56e0\u4e3a\u5f53\u524d\u76ee\u5f55\u6ca1\u6709\u5728PATH\u4e2d\uff0c\u6240\u6709”.”\u662f\u7528\u6765\u8868\u793a\u5f53\u524d\u76ee\u5f55\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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