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
U# t4 |( j* t8 D: ~yum install vixie-cron 撠勗臬鋆摰
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+ Y1 b: o" W, y' y/ V# K! _7 R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
3 O2 v( H7 ]/ U3 ^( Z, M8 C G1 rcrontab 澆憒銝嚗
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閬瑁隞
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4 G4 h( Q; F! A30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸
0 Q" _0 s1 i# w* {% }1 \+ A, \* 銵函內瘥交瘥賢瑁
: f* ^0 @5 s% a1 c血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
; i, i. w0 T U, o3 R" `: {靘:# every two hours at the top of the hour; K5 z$ T8 e1 S0 v' `+ o
0 */2 * * * date
: P- M$ J; x7 v' { # every two hours from 11p.m. to 7a.m., and at 8a.m.
$ O+ j7 @& J4 V9 c" a' X% ]* n 0 23-7/2,8 * * * date
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4 U2 D( `8 {# H渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php
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潸” 2015-9-22 22:11:29
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鈭
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