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/ f: T' o8 U4 [- h: a+ C1 d' R
; B! b5 X1 }5 ?) D; _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 c' n* C( ^6 i( p) y) U
yum install vixie-cron 撠勗臬鋆摰) b0 M5 |3 C2 s
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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
6 m& j3 |1 x4 o, S' ocrontab 澆憒銝嚗
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: ]2 x1 g/ P8 C( }% l3 N5 m靘憒:
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30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸
* y& S" r. l8 D6 e, ?4 d* 銵函內瘥交瘥賢瑁
* W7 d# P- z, i血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm; M% w, o- ~ q6 w- I
靘:# every two hours at the top of the hour
1 e- `# _1 F% O$ | 0 */2 * * * date
J2 X i* C4 t1 m # every two hours from 11p.m. to 7a.m., and at 8a.m.: w3 o0 l6 O! q- ]- H: p7 V
0 23-7/2,8 * * * date
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$ }* s5 c: G% v2 r1 r0 r5 X渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php% G7 o+ G- H1 T* }( z% \
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潸” 2015-9-22 22:11:29
嗉
鈭
霈
