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[linux隞也 crontab 雿輻冽澆

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2015-9-22 22:11:29 | 芰閰脖 撣 |摨閬 |梯璅∪
Linux/Unix 蝟餌絞 crontab 蝔撘舐其霈蝟餌絞雿輻刻芾閮剖券閬   嚗閬鈭
$ @0 j4 v3 @; q3 U( ^
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靘憒雿輻刻臭誑閮剖瘥銝拐8暺芸ftp 唳啣餅瑼獢嚗   瘥憭拙憭3暺芸隞質蝑...閬摰鋆蝵殷閮園扯撣貉酉 /usr/sbin/crond 蝔撘銝 Linux 券璈芸頛伐憒潛曄 crond 刻嚗臭誑 /etc/rc.d/init.d/ 桅銝臬行撠瑁crond 蝔撘隞文仿璈芸瑁瑼鋆⊿U憒賣銵函內瘝摰鋆crond, CentOS 銝芾銝隞
. E. `: l: }6 Qyum install vixie-cron    撠勗臬鋆摰
$ q5 k$ W* ?3 _1 u3 W$ u2 l! ~- _7 |/ Z9 E) d& O% ?
雿輻刻臭誑 crontab -e(摮瑼敺喳餌) 隞支蝺典神閬撌乩撖怠其 file 鋆∴瑁 crontab filename  撠勗臭誑鈭雿輻刻 crontab 瑼賣摮 /var/spool/cron/ 銝,瑼撠望航府撣唾摮,靘憒 root
# {4 |3 W" E4 B, |crontab 澆憒銝嚗
4 k! T% G8 c4 k8 E
5 l, o7 {8 A+ w: f2 |* V: y               閬瑁隞
- }$ _+ z( F, A$ \6 P靘憒:
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30 12   *   *   *       /usr/bin/rm xxx.txt' j7 B, u# g& ~2 c/ Q5 ?+ i
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12:30 撠 xxx.txt 瑼獢畾箸4 D( n- Q, l  V+ M
* 銵函內瘥交瘥賢瑁1 E) o6 c2 a3 d  L5 f' b5 F
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
5 q. M9 a6 Y' Y" E& L靘:# every two hours at the top of the hour$ o7 G( E" K6 a. u, m
           0 */2 * * * date3 E! G3 |7 x3 B- C. S4 i  U: J
# every two hours from 11p.m. to 7a.m., and at 8a.m.
1 l8 y! Z" x) l& @5 S           0 23-7/2,8 * * * date2 S1 T" u  j: T" ?' a

) g$ F  }" `* R1 a* L. p! R渲底蝝啣臬:  http://linux.vbird.org/linux_basic/0430cron.php
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