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
, }$ Q! P& l: W, Oyum install vixie-cron 撠勗臬鋆摰$ I; ~8 H# p. A( [
$ I" N6 L# O }. z/ U0 \% P2 x- D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. C$ D, G8 w8 L9 f, R5 h
crontab 澆憒銝嚗+ {: y# w( ^3 z# }. {. g5 |6 L/ X/ {
+ C- ^- }/ ]1 f 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6 n$ d0 c, i' _; P( Q: ^
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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
6 p$ A/ w$ Q8 Z& Z6 T0 q靘:# every two hours at the top of the hour
4 s9 L% L6 D9 I9 w. [4 g& { 0 */2 * * * date/ n/ Z0 Q- K% _* B
# every two hours from 11p.m. to 7a.m., and at 8a.m.$ ?1 t9 q7 K& w
0 23-7/2,8 * * * date
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4 ?2 M& k' W* y* l: J8 V渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php
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潸” 2015-9-22 22:11:29
嗉
鈭
霈
