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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
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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
2 A& m2 F" B  @7 d& Kyum install vixie-cron    撠勗臬鋆摰2 L/ \6 ~6 l3 ^- A
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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+ W& A# X2 D* k# q6 q2 A8 R& i
crontab 澆憒銝嚗
/ v% m4 r; V# j' \' u( r
* I# ^6 `, o5 X               閬瑁隞
6 {4 G/ O) @) |( [' q1 Z# j靘憒:+ a$ W+ h* n3 X6 U1 S5 p  k4 R5 m

9 s& x- G* R' ~: X" S30 12   *   *   *       /usr/bin/rm xxx.txt, ?0 n6 v* c3 Y
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12:30 撠 xxx.txt 瑼獢畾箸8 s' o" P8 F, H
* 銵函內瘥交瘥賢瑁0 }. ?5 h; O/ W7 n
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm  k  C2 V. h3 `$ e
靘:# every two hours at the top of the hour
. p. U6 c' ]3 p. E4 ~; n: c           0 */2 * * * date
% @& Q( ?0 ]6 Z
# every two hours from 11p.m. to 7a.m., and at 8a.m.
1 v8 B+ b1 a0 R& W0 _           0 23-7/2,8 * * * date2 S6 Q5 W8 U. z" P
- {$ Y" ^2 y0 P8 r5 l$ Y
渲底蝝啣臬:  http://linux.vbird.org/linux_basic/0430cron.php3 e$ v* d( u. P" R

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