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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  J8 S2 u4 V( C: X2 a

" u$ I7 z! ?& u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 + ~# b+ H; N2 G2 s+ T# L- y8 J
yum install vixie-cron    撠勗臬鋆摰, e! f* z0 j" P% N
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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
4 W9 o5 j! z: g% X8 Dcrontab 澆憒銝嚗
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/ M1 N; \( t& ]2 X9 f9 ~' H* q# f8 B6 V               閬瑁隞4 M' p7 n& P" k. l
靘憒:: v5 l5 }; K3 K! Z  n3 q6 [8 v" T# I

) M2 T% A: q8 }+ P0 V30 12   *   *   *       /usr/bin/rm xxx.txt
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2 z# ?5 T) F6 a8 H5 D2 c* G) R 12:30 撠 xxx.txt 瑼獢畾箸
$ A2 u+ S+ F* Z' C, y* 銵函內瘥交瘥賢瑁. W. b$ U& z& \) c, m$ r$ R; L
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm$ @- _, Q0 z8 n$ I
靘:# every two hours at the top of the hour
6 _% }! f9 M3 q4 u' x  J           0 */2 * * * date
# e) F+ `1 ], u
# every two hours from 11p.m. to 7a.m., and at 8a.m.
1 C: E5 G) X( _/ s7 ~! c3 `           0 23-7/2,8 * * * date( P5 K/ y: {7 H, i+ @8 [

  x0 F/ I: ]9 L% X渲底蝝啣臬:  http://linux.vbird.org/linux_basic/0430cron.php
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