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* j( Q1 z! c2 J& X& c, d
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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
% @$ k) a2 M* kyum install vixie-cron 撠勗臬鋆摰% O5 J; j( c( q, [ i. x/ o1 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
$ ~: M2 W0 i& B" K4 H$ a* vcrontab 澆憒銝嚗9 H2 y5 N+ ~, b" p( m/ Y
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閬瑁隞
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/ I( i; o# T6 U6 \5 p0 A M1 X' r30 12 * * * /usr/bin/rm xxx.txt
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. M+ @3 c9 b' n5 o# n 12:30 撠 xxx.txt 瑼獢畾箸/ F$ U0 {$ X; x+ _$ o) E( J
* 銵函內瘥交瘥賢瑁. b7 t, b* E* e7 D a5 \4 Y' i
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm3 g9 ]' \. b; O# A9 ]
靘:# every two hours at the top of the hour. L+ P9 `- z4 f# Z# _7 K
0 */2 * * * date
9 e, @0 a; N& a # every two hours from 11p.m. to 7a.m., and at 8a.m.
9 {; ~/ t3 n: }9 ~; W 0 23-7/2,8 * * * date% F' ?$ c% D/ ^5 l# b9 F2 G5 X
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渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php6 Y7 M! j7 h8 y% a
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潸” 2015-9-22 22:11:29
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