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
j$ h( q1 R) s: p0 T5 ]$ ]" k5 wyum install vixie-cron 撠勗臬鋆摰
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( b1 U3 x" O; a- V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
) U5 ^9 n- n$ ~! Mcrontab 澆憒銝嚗: q! d7 b$ ~% t% \8 B
2 U, \6 T; V* C( l/ l" g- q 閬瑁隞
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8 t+ ~& O1 E) p" X- d6 \30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸! d7 J) a n% w0 a3 K
* 銵函內瘥交瘥賢瑁
( @; o7 Z5 v. K0 D) D6 h血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm h& A& x, }7 P9 n1 y
靘:# every two hours at the top of the hour
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; ~& v: P( j; ~ x$ {7 a # every two hours from 11p.m. to 7a.m., and at 8a.m., @: Q* U$ ? j7 g
0 23-7/2,8 * * * date
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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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