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[linux隞也 crontab 雿輻冽澆

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2015-9-22 22:11:29 | 芰閰脖 撣 |摨閬 |梯璅∪
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! r' Y4 _" y: x6 v; ?8 F' k

+ M0 ^6 @- A2 D/ s1 G5 j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 P8 E8 j0 Z$ }' c' H" vyum install vixie-cron    撠勗臬鋆摰0 \4 L# l! z) N( n

" b4 a; ^1 G4 G) j0 L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' x% _, K+ z  q9 d- a; }
crontab 澆憒銝嚗! }5 V3 U2 l; m- f; N

# ]& j4 S2 q. U               閬瑁隞
6 w0 C( O6 S6 G( c靘憒:
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30 12   *   *   *       /usr/bin/rm xxx.txt
. @" ?4 }- v! s1 _4 @
4 J1 x' c/ M3 A2 V 12:30 撠 xxx.txt 瑼獢畾箸
9 E/ r5 n2 K/ z% ]9 Y& A  ?( N$ T* 銵函內瘥交瘥賢瑁
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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( [& A, n# l  T: C0 o  A' d
靘:# every two hours at the top of the hour
8 j, ~; o1 u# {3 {! H3 ?/ i$ U           0 */2 * * * date" \* |7 }: @# P# M* H) i1 z) g
# every two hours from 11p.m. to 7a.m., and at 8a.m.1 v7 }' ^, R3 x/ d% ^3 n! I
           0 23-7/2,8 * * * date" h, r% v/ d" O6 e$ i5 Y" d

+ x! W* x5 Y/ @! v8 s5 s渲底蝝啣臬:  http://linux.vbird.org/linux_basic/0430cron.php3 e$ C6 L5 W- `+ R

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