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 k4 x/ ~, P1 q' o! ^$ c) o' @/ k/ U& f
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 . [' b' M8 f8 o9 h" F. a
yum install vixie-cron 撠勗臬鋆摰
1 [. A$ O9 d+ f: x5 @% [& o
) i4 H# W) ? G4 B; \) Y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
! ~8 y* g3 H; C6 Rcrontab 澆憒銝嚗
: _! s" v: Q0 A7 H
' R4 i& V# _& r5 ~3 Q2 g4 N 閬瑁隞& j- J8 T M) x. u. R7 Y. Y
靘憒:0 z- E+ n3 j+ @. k2 ]# p
% k" O! \4 h7 ~5 k
30 12 * * * /usr/bin/rm xxx.txt0 L( K1 h ]1 G3 H- Y
" w% s% \: e0 s- X6 j 12:30 撠 xxx.txt 瑼獢畾箸
& ]" \# K% ]7 X7 w; Z- p( m) W; F* 銵函內瘥交瘥賢瑁- y; {7 P5 ?( A b
血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
! [9 X! R0 I- t# a( p; f, g靘:# every two hours at the top of the hour' j$ `8 r6 e# x8 b/ @
0 */2 * * * date5 u; q& s( s/ \, J" e6 S
# every two hours from 11p.m. to 7a.m., and at 8a.m.- I+ `: w; b0 t8 R& R: }' D
0 23-7/2,8 * * * date) i/ M1 h/ l0 J, V6 B
6 r" X; W+ U4 r% F4 y3 ^! v渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php
/ U" J' X. }2 T- B! u( M4 L& V( N9 a- a
1 N- ]4 p6 O4 C" n2 n
; G' |$ X- E/ G/ v- b
+ K+ l# Y4 t% g1 o) v
|
|
潸” 2015-9-22 22:11:29
嗉
鈭
霈
