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; F; f( z0 h3 Y ^, A
3 s* V* y7 C8 y* \* E3 b( K
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
3 L" F$ b- J5 Syum install vixie-cron 撠勗臬鋆摰
/ R( b- \- U; p, f% v' H% t* Y: R# Z- B( ]5 s, 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 root
* C, u/ a9 g1 f3 B5 D) ~crontab 澆憒銝嚗/ \4 f% b G! M
* d; ~5 @! X) f
閬瑁隞5 V" D/ [" k8 H4 d
靘憒:
; y' M2 C( A1 |5 j( F0 b, @( _, a/ x" _/ n, d
30 12 * * * /usr/bin/rm xxx.txt, n9 |( }- {+ U" a4 H* O
8 q6 O: s. ~3 w( n/ w/ A9 l 12:30 撠 xxx.txt 瑼獢畾箸( [% v0 d, }5 L' o: j" Q" B7 `6 \. O
* 銵函內瘥交瘥賢瑁
5 ^, L, b7 A2 b9 x3 K血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
% `& C1 e! K" U H8 m" X4 ?6 d靘:# every two hours at the top of the hour' H( g4 F1 ?# M! h
0 */2 * * * date
3 ^3 ~4 C1 R& t: x* Q # every two hours from 11p.m. to 7a.m., and at 8a.m.
. t0 r6 [& Y: X6 {( A8 ~$ |) R 0 23-7/2,8 * * * date5 o) x( H/ ~1 H/ g9 d4 J' b; a, ^
2 d- G' \1 E8 b2 F; X8 I
渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php
( m# A5 |3 A* G% e, o& W
' P6 i8 A) N9 _0 [( H( H% C& d5 F0 I2 [) G7 B' g3 r$ _# ^) S7 k) E
2 t4 p0 s* X; y( Y
4 k! N" f! c0 y; \' N/ Y7 G |
|
潸” 2015-9-22 22:11:29
嗉
鈭
霈
