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0 \/ }# h3 y M' W/ J
: M/ L4 N2 l; D! D0 w/ h3 v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
; e4 b; E' Q, R; Kyum install vixie-cron 撠勗臬鋆摰
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! t4 f& _% [3 b5 i% ?1 L) u* m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 root5 H- T- y1 `. k# q, Q7 J
crontab 澆憒銝嚗
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靘憒:
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30 12 * * * /usr/bin/rm xxx.txt
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12:30 撠 xxx.txt 瑼獢畾箸
" S! O6 E4 ?9 F* 銵函內瘥交瘥賢瑁
' z' y3 e8 P0 R血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
/ o) {: F. `5 t# K+ X3 T# p8 X" S靘:# every two hours at the top of the hour
6 Q. _! ]$ W% c/ g7 z$ Z. @ 0 */2 * * * date
; W( F, f3 M7 N. N # every two hours from 11p.m. to 7a.m., and at 8a.m.
' m' m; L, i3 V l8 |. ?0 R. K 0 23-7/2,8 * * * date
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9 g+ A9 t o+ F3 E1 N4 O# r5 J" f渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php( I4 T5 Y# h6 v W' y2 O! e
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潸” 2015-9-22 22:11:29
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