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
$ D. P( |4 e8 M4 h$ v/ }$ t7 x$ f& r; k; }$ T
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 1 L3 c7 T$ ~6 R
yum install vixie-cron 撠勗臬鋆摰$ X0 H7 B8 j# u( }1 N7 n' N
[& S2 G; p& g" _( x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
: q3 d0 |3 T' M2 ], z( @# [& acrontab 澆憒銝嚗
. ^, [; o P; N0 N
% ^; G/ ]( \7 [' R 閬瑁隞& J# J% ^( @ O- h& A8 D
靘憒: z! X+ R' O. G# i+ C/ Z
/ _* r, G1 k# s% q' E3 N: y
30 12 * * * /usr/bin/rm xxx.txt+ Y; z& @* B) W1 a
1 C0 O& O9 Q6 Y' U7 B( |$ k m 12:30 撠 xxx.txt 瑼獢畾箸: Z% d) F8 E2 p- j, l! q
* 銵函內瘥交瘥賢瑁
4 H- @- {+ {: p5 K* F' Q- I血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm3 r3 L6 q. ]& R" M3 j% l/ z( K% @
靘:# every two hours at the top of the hour
7 M$ Y' k' y: e! B" t$ ^; r! ~9 | 0 */2 * * * date/ A* y B' O g% g( I* b+ T* ?+ l
# every two hours from 11p.m. to 7a.m., and at 8a.m.
+ l+ I, J+ V& x( S# m 0 23-7/2,8 * * * date
9 v6 s3 t9 Q9 q _: G) u/ L1 U* ]* ]* q! r5 o) a
渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php' E l+ L; I; W: e4 O! N4 [- `/ J$ A
) V6 L; m: S/ F5 q+ Y. G3 M$ c |8 o, E' G( @# U4 m4 B
, y7 W9 m; B* A$ |9 m& m0 } }
( y/ T! T' T0 G1 K" i |
|
潸” 2015-9-22 22:11:29
嗉
鈭
霈
