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 . J7 i- Q4 m: H! A/ k
yum install vixie-cron 撠勗臬鋆摰, v+ y k2 p/ n b
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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
: X# v/ x" g; K8 hcrontab 澆憒銝嚗: f3 ?$ ~5 V2 w9 E& z7 E* j/ p/ E
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30 12 * * * /usr/bin/rm xxx.txt! T8 ]9 c! z# a; ?+ u" f
( y/ V+ F" S9 L4 N 12:30 撠 xxx.txt 瑼獢畾箸
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血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
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0 */2 * * * date; A! Z3 { `2 R$ l; R9 `6 s
# every two hours from 11p.m. to 7a.m., and at 8a.m.
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潸” 2015-9-22 22:11:29
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