{"id":197,"title":"crontab\u4efb\u52a1\u8c03\u5ea6","good":0,"bad":0,"hit":2110,"created_at":"2016-02-26 00:00:00","content":"

\u6240\u8c13\u7684\u4efb\u52a1\u8c03\u5ea6\u4e0ewindows\u91cc\u9762\u7684\u8ba1\u5212\u4efb\u52a1\u7c7b\u4f3c<\/p>

windows\u91cc\u9762\u662f\u5728\u4e00\u4e2abat\u6587\u4ef6\uff08\u6279\u5904\u7406\u6587\u4ef6)\u4e2d\u5199\u597d\u4e00\u4e9bdos\u547d\u4ee4\uff0c\u7136\u540e\u5728\u8ba1\u5212\u4efb\u52a1\u4e2d\u5c06\u5176\u6dfb\u52a0\u8fdb\u6765\uff0c\u8bbe\u7f6e\u5176\u4f55\u65f6\u6267\u884c\u5373\u53ef\uff1b<\/p>

<\/p>

\u5728linux\u4e2d\u7528conrtab\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u7684\u529f\u80fd\uff1b<\/p>

1\u3001\u67e5\u770b\u5f53\u524d\u6709\u54ea\u4e9b\u4efb\u52a1\u8c03\u5ea6\uff1f<\/p>

[root@localhost hurong]# crontab -lno crontab for root\u7531\u4e8e\u8fd8\u6ca1\u6709\u5199\u8fc7\u8ba1\u5212\u8c03\u5ea6\uff0c\u8fd9\u91cc\u67e5\u8be2\u51fa\u6765\u7684\u662f\u6ca1\u6709<\/p>

<\/p>

2.1\u3001\u5982\u679c\u65b0\u5efa\u4efb\u52a1\u8c03\u5ea6\uff1f[root@localhost hurong]# crontab -e\u56de\u8f66\u540e\u5373\u8fdb\u5165crontab<\/p>

\u7528vi\u7f16\u8f91\u5668\u8f93\u5165<\/p>

* * * * * date >> \/hurong\/home\/crontabtest<\/p>

\u4fdd\u5b58\uff0c\u9000\u51fa<\/p>

\u6ce8\u610f\u7a7a\u683c\u4e0d\u80fd\u5c11\uff0c*\u53f7\u3001date\u3001>>\u4e4b\u95f4,\u53e6\u5916>>\u8868\u793a\u8ffd\u52a0 >\u8868\u793a\u8986\u76d6 <\/p>

\u518d\u6b21\u67e5\u770b\u53ef\u4ee5\u770b\u5230\u5df2\u6dfb\u52a0\u597d\u4e86\uff1a<\/p>

[root@localhost hurong]# crontab -l* * * * * date >> \/home\/hurong\/crontabtest[root@localhost hurong]# \u8fc7\u4e00\u5206\u949f\u540e\u67e5\u770b\uff1a<\/p>

[root@localhost hurong]# pwd\/home\/hurong[root@localhost hurong]# lscrontabtest  Documents  Music     Public     VideosDesktop      Downloads  Pictures  Templates[root@localhost hurong]#<\/p>

\u770b\u5230\u786e\u5b9e\u751f\u6210\u4e86\u4e00\u4e2acrontabtest\u7684\u6587\u4ef6\uff0c\u8fc7\u51e0\u5206\u949f\u6253\u5f00\u5b83\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u9694\u4e00\u5206\u949f\u7cfb\u7edf\u7684\u4efb\u52a1\u8c03\u5ea6\u5c06\u7cfb\u7edf\u65f6\u95f4\u5199\u5165\u5230crontabtest\u6587\u4ef6\u4e2d\u4e86\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>

[root@localhost hurong]# cat crontabtestFri Feb 26 07:57:02 PST 2016Fri Feb 26 07:58:01 PST 2016Fri Feb 26 07:59:01 PST 2016Fri Feb 26 08:00:01 PST 2016Fri Feb 26 08:01:01 PST 2016Fri Feb 26 08:02:01 PST 2016[root@localhost hurong]# <\/p>

2.2\u3001\u66f4\u597d\u7684\u6dfb\u52a0\u65b9\u5f0f<\/p>

\u4e0a\u9762\u7684\u6dfb\u52a0\u4efb\u52a1\u8c03\u5ea6\u7684\u65b9\u5f0f\u867d\u7136\u4e5f\u53ef\u4ee5\u7528\uff0c\u4f46\u662f\u5982\u4f55\u6709\u591a\u4eba\uff0c\u5f88\u591a\u4e2a\u4e0d\u540c\u4efb\u52a1\uff0c\u5168\u90e8\u5199\u5728\u91cc\u9762\u5c31\u7ba1\u7406\u4e86\uff0c\u8fd9\u65f6\u5019\u53ef\u4ee5\u5199\u4e00\u4e2a\u53ef\u6267\u884c\u6587\u4ef6(shell\u7f16\u7a0b)\u7136\u540e\u518d\u7528\u4efb\u52a1\u8c03\u5ea6\u8fd9\u4e2ashell\u7a0b\u5e8f\uff0c\u5728shell\u91cc\u9762\u53ef\u4ee5\u7528if else\u7b49\u8fdb\u884c\u6761\u4ef6\u5224\u65ad\uff0c\u65b9\u4fbf\u7ba1\u7406\uff1b<\/p>

\u5f53\u524d\u8def\u5f84\uff1a<\/p>

[root@localhost hurong]# pwd\/home\/hurong\u5148\u5efa\u7acb\u4e00\u4e2atestshell.sh\u6587\u4ef6(.sh\u6587\u4ef6\u5373\u4e3alinux\u91cc\u7684\u53ef\u6267\u884c\u6587\u4ef6\uff09<\/p>

[root@localhost hurong]# vi testshell.sh<\/p>

\u7136\u540e\u5728\u5176\u4e2d\u8f93\u5165\u5982\u4e0b\u5185\u5bb9\uff0c\u8868\u793a\u8fd9\u4e2a.sh\u6587\u4ef6\u88ab\u8c03\u7528\u65f6\u5c06\u7cfb\u7edf\u65e5\u671f\u5199\u5165\u5230\/home\/hurong\/shelldate\u4e2d\uff1a<\/p>

date >> \/home\/hurong\/shelldate\u7136\u540e\u5199\u4efb\u52a1\u8c03\u5ea6\uff1a<\/p>

[root@localhost hurong]# crontab -e\u5728\u5176\u4e2d\u8f93\u5165\u5982\u4e0b\u5185\u5bb9\uff0c\u8868\u793a\u6bcf\u5206\u949f\u6267\u884c\u4e00\u6b21\/home\/hurong\/testshell.sh\uff1a<\/p>

* * * * * \/home\/hurong\/testshell.sh<\/p>

\u5373\u7ec8\u770b\u5230\u751f\u6210\u4e86\u6211\u4eec\u9700\u8981\u7684\u6587\u4ef6shelldate\uff1a<\/p>

[root@localhost hurong]# lscrontabtest  Documents  Music     Public     Templates     VideosDesktop      Downloads  Pictures  shelldate  testshell.sh[root@localhost hurong]# \u6253\u5f00\u5b83\uff0c\u91cc\u9762\u7684\u5185\u5bb9\u7c7b\u4f3c\u4e8e\uff1a<\/p>

[root@localhost hurong]# cat shelldateFri Feb 26 08:14:01 PST 2016Fri Feb 26 08:15:01 PST 2016Fri Feb 26 08:16:01 PST 2016Fri Feb 26 08:17:01 PST 2016Fri Feb 26 08:18:01 PST 2016Fri Feb 26 08:19:01 PST 2016Fri Feb 26 08:20:01 PST 2016Fri Feb 26 08:21:01 PST 2016[root@localhost hurong]# <\/p>

<\/p>

\u5907\u6ce8\uff1a\u4e0a\u9762\u7684* * * * *\u8868\u793a\u7684\u662f\u65f6\u95f4\uff0c\u7cbe\u786e\u5ea6\u6700\u5c0f\u4e3a\u5206\uff0c\u5168\u662f*\u8868\u793a\u6bcf\u5206\u949f\u6267\u884c\u4e00\u6b21\uff1a<\/p>

* * * * *\u4f9d\u6b21\u5bf9\u5e94 \u5206 \u65f6 \u65e5 \u6708 \u661f\u671f<\/p>

<\/p>

<\/p>

3\u3001\u5982\u4f55\u5220\u9664\uff1f<\/p>

crontab -r<\/p>

-r\u5373remove<\/p>

<\/p>

<\/p>

crontab\u6587\u4ef6\u7684\u4e00\u4e9b\u4f8b\u5b50\uff1a<\/p>

30 21 * * * \/usr\/local\/etc\/rc.d\/lighttpd restart\u4e0a\u9762\u7684\u4f8b\u5b50\u8868\u793a\u6bcf\u665a\u768421:30\u91cd\u542fapache\u3002<\/p>

45 4 1,10,22 * * \/usr\/local\/etc\/rc.d\/lighttpd restart\u4e0a\u9762\u7684\u4f8b\u5b50\u8868\u793a\u6bcf\u67081\u300110\u300122\u65e5\u76844 : 45\u91cd\u542fapache\u3002<\/p>

10 1 * * 6,0 \/usr\/local\/etc\/rc.d\/lighttpd restart\u4e0a\u9762\u7684\u4f8b\u5b50\u8868\u793a\u6bcf\u5468\u516d\u3001\u5468\u65e5\u76841 : 10\u91cd\u542fapache\u3002<\/p>

0,30 18-23 * * * \/usr\/local\/etc\/rc.d\/lighttpd restart\u4e0a\u9762\u7684\u4f8b\u5b50\u8868\u793a\u5728\u6bcf\u592918 : 00\u81f323 : 00\u4e4b\u95f4\u6bcf\u969430\u5206\u949f\u91cd\u542fapache\u3002<\/p>

0 23 * * 6 \/usr\/local\/etc\/rc.d\/lighttpd restart\u4e0a\u9762\u7684\u4f8b\u5b50\u8868\u793a\u6bcf\u661f\u671f\u516d\u768411 : 00 pm\u91cd\u542fapache\u3002<\/p>

* *\/1 * * * \/usr\/local\/etc\/rc.d\/lighttpd restart\u6bcf\u4e00\u5c0f\u65f6\u91cd\u542fapache<\/p>

* 23-7\/1 * * * \/usr\/local\/etc\/rc.d\/lighttpd restart\u665a\u4e0a11\u70b9\u5230\u65e9\u4e0a7\u70b9\u4e4b\u95f4\uff0c\u6bcf\u9694\u4e00\u5c0f\u65f6\u91cd\u542fapache<\/p>

0 11 4 * mon-wed \/usr\/local\/etc\/rc.d\/lighttpd restart\u6bcf\u6708\u76844\u53f7\u4e0e\u6bcf\u5468\u4e00\u5230\u5468\u4e09\u768411\u70b9\u91cd\u542fapache<\/p>

0 4 1 jan * \/usr\/local\/etc\/rc.d\/lighttpd restart\u4e00\u6708\u4e00\u53f7\u76844\u70b9\u91cd\u542fapache<\/p>

<\/p>

[root@iZwz99m0qp1swglw9om6zxZ ~]# crontab -l\n# .---------------- minute (0 - 59)\n# | .------------- hour (0 - 23)\n# | | .---------- day of month (1 - 31)\n# | | | .------- month (1 - 12) OR jan,feb,mar,apr ...\n# | | | | .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat\n# | | | | |\n\n#\u6bcf\u5929\u4eceredis\u66f4\u65b0\u4e00\u6b21\u6587\u7ae0\u6d4f\u89c8\u6b21\u6570\u5230\u6570\u636e\u5e93\n59 * * * * \/wwwroot\/github_www_hurong\/hurong.sh\n\n# \u4e00\u5206\u949f\u4e00\u6b21\n#*\/1 * * * * curl https:\/\/apibook.tnaot.com\/grab_all_trips_data\n*\/1 * * * * \/root\/tnaot.sh\n[root@iZwz99m0qp1swglw9om6zxZ ~]# \n[root@iZwz99m0qp1swglw9om6zxZ ~]# \n[root@iZwz99m0qp1swglw9om6zxZ ~]# \n[root@iZwz99m0qp1swglw9om6zxZ ~]# cat tnaot.sh \n#!\/bin\/bash\nstep=5 #\u95f4\u9694\u7684\u79d2\u6570\uff0c\u4e0d\u80fd\u5927\u4e8e60  \nfor (( i = 0; i < 60; i=(i+step) )); do\n    $(curl  'https:\/\/apibook.tnaot.com\/grab_all_trips_data')\n    sleep $step\ndone\nexit 0\n[root@iZwz99m0qp1swglw9om6zxZ ~]#<\/pre>
<\/p>"}