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4 J3 ?2 V" S; T! K; N: g' ? h, Z
/ q, d# `( L8 _4 K, X6 o! ]) T* Y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 1 k0 Y1 p0 u/ y. J" k+ f
yum install vixie-cron 撠勗臬鋆摰% k0 Q. M: v7 Q7 n/ P5 e8 t, q! s
2 p$ L6 f O/ B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 }% e0 l0 j9 l% U) P! m: C- E, Pcrontab 澆憒銝嚗
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靘憒:
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30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸
6 Y3 ^1 Y& K' f d* 銵函內瘥交瘥賢瑁" b6 d! p F l+ C% |3 v8 M
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm* w; j" }9 c7 E$ K
靘:# every two hours at the top of the hour
! z% {& V# O& x! J9 G( E 0 */2 * * * date
9 Z+ k& C2 G( s: A # every two hours from 11p.m. to 7a.m., and at 8a.m.
3 I+ C6 q" ?3 q% S/ K7 l' I2 E 0 23-7/2,8 * * * date
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! d+ h/ }3 {7 V7 n. v) ~% N渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php4 P; M% J6 H+ Q8 ~, C/ T
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潸” 2015-9-22 22:11:29
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