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
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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
5 K( Y" E7 l) g& P0 c0 a3 J- gyum install vixie-cron 撠勗臬鋆摰
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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
K) ?/ x- A4 I+ N# h4 g! ]: Qcrontab 澆憒銝嚗9 o1 P, P4 d" j' e$ M# c
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30 12 * * * /usr/bin/rm xxx.txt2 A- r' j2 {7 d
9 M8 K0 k' i$ h8 [' |. {* W6 l 12:30 撠 xxx.txt 瑼獢畾箸
2 T2 V }( S" U) d" W! O, G* 銵函內瘥交瘥賢瑁
4 \0 a3 Y! h1 |; R' e, M血撖 crontab 瘜冽敹雿輻 蝯撠頝臬憒 rm 瑁瑼 敹撖急 /usr/bin/rm
7 D' w* L$ Z4 G( y靘:# every two hours at the top of the hour7 f& H) Z; g& N) o5 L: [2 @
0 */2 * * * date. i7 {0 U8 l, Z9 j% x8 @
# every two hours from 11p.m. to 7a.m., and at 8a.m.
4 R' ^ J* X- c& ~ 0 23-7/2,8 * * * date
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渲底蝝啣臬: http://linux.vbird.org/linux_basic/0430cron.php9 x) T1 m: v2 o( o- f, H
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潸” 2015-9-22 22:11:29
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