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
% z$ w# V+ b1 j( d% Xyum install vixie-cron 撠勗臬鋆摰 A) ]( y! s! {; P d
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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
" d/ W9 q# e( V* z3 S3 Ocrontab 澆憒銝嚗6 k: w g1 F& Y- y4 _9 D$ x
0 F# p! ]0 z! D9 F$ L3 I: Y- H 閬瑁隞
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30 12 * * * /usr/bin/rm xxx.txt. [/ i, r! g. t( q6 c
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12:30 撠 xxx.txt 瑼獢畾箸( q( @& b; Z8 o) Y* K* O$ H
* 銵函內瘥交瘥賢瑁
+ o: _& e; p! X7 {. S$ L6 t血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
5 v- X& N! e7 J0 q2 ~1 X9 O靘:# every two hours at the top of the hour; R E, H. r, h* i* I2 u
0 */2 * * * date
# ?' f- u% N. k, ], _! @- R( t' ^4 V # every two hours from 11p.m. to 7a.m., and at 8a.m.
4 [* ]' q9 z9 w3 e7 w' b 0 23-7/2,8 * * * date
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9 _& p" b3 {$ i6 V$ B2 T8 k% Y渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php, U- {. l! ?* A. W
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潸” 2015-9-22 22:11:29
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