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
4 o" j+ e9 D5 F4 E8 jyum install vixie-cron 撠勗臬鋆摰, D9 {0 [- b* N# v% {
$ J) k, p) p' c% 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
% T Q d) o* i, P7 f) s3 Z5 Ocrontab 澆憒銝嚗 Q) K' U) a2 @+ }$ s
! o' d/ X$ b+ l& S- L; Y 閬瑁隞
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30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸
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$ M' C2 T. |4 v: p3 Q血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm. [) J( c9 c( S2 t0 x7 V" e: A3 m
靘:# every two hours at the top of the hour
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$ B1 ^2 v/ M! x$ ~( |3 d6 P2 K) l # every two hours from 11p.m. to 7a.m., and at 8a.m.
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渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php0 c* j! i' {. @. J
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