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4 q+ p. Y5 U; e$ U m& m) g+ V
" [7 P1 J9 i/ q3 h2 Z, 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
, F0 r4 z# |4 j4 Tyum install vixie-cron 撠勗臬鋆摰
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+ v2 _ T- F3 A' Q* a7 I" w% N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 root0 {' G2 d: ^. T: r" ^
crontab 澆憒銝嚗
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閬瑁隞 I+ E$ i1 m/ ~# ~( K
靘憒:
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6 O: e3 `! L q30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸9 r; K6 E" Y$ i ^- D9 y. g1 m
* 銵函內瘥交瘥賢瑁
% V& j# }: l, z: @血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm5 @) t- @: n4 j- q0 s' A$ E
靘:# every two hours at the top of the hour9 L1 }9 x4 x0 V. H7 _$ I3 ?- D/ `
0 */2 * * * date
. ?/ G2 }1 w. A # every two hours from 11p.m. to 7a.m., and at 8a.m.
/ i/ b% _+ A7 d 0 23-7/2,8 * * * date
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渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php% V/ r# N( i7 ]: X/ H, v
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潸” 2015-9-22 22:11:29
嗉
鈭
霈
