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+ _% E0 s! W u
0 J5 g/ Z5 {. E/ q1 d& z$ }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 8 H% E$ V' R& Q9 x, ^
yum install vixie-cron 撠勗臬鋆摰
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6 Y* t- K" S" ^8 ?0 |: V/ v& v' e. w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
: c8 z) F' B, }$ N- i* fcrontab 澆憒銝嚗% I7 E, O0 I* B$ n
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閬瑁隞
9 r2 B" W u( o$ l/ q" K" z靘憒:7 u# V8 s2 B3 E! m% I* d# r
' G2 w3 [" k3 C, {5 m% K30 12 * * * /usr/bin/rm xxx.txt9 h7 C* I; @5 Z% I9 k: ?7 w1 P
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12:30 撠 xxx.txt 瑼獢畾箸1 x' w% k+ ~; h7 v- `5 h7 v5 J
* 銵函內瘥交瘥賢瑁) m- X; `% c0 R$ a. v& B
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
& l4 }% W1 E" `2 ?0 l- |" P5 u; }: R靘:# every two hours at the top of the hour
/ {6 z' E2 ]" j, D" M5 b 0 */2 * * * date
+ _) I6 b9 ]7 q, W$ D* A: V # every two hours from 11p.m. to 7a.m., and at 8a.m.8 S+ J: b" g4 [1 e7 h
0 23-7/2,8 * * * date* @5 H8 L; z7 d
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渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php+ y# j/ ~: I! y P M" O8 \
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潸” 2015-9-22 22:11:29
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