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linux ¶¨ÆÚµ÷¶È½ø³Ì (cron Óë crontab)


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cron ϵͳµ÷¶È½ø³Ì£¬Ê¹ÓÃËüÔÚÿÌìµÃ·Ç¸ß·å¸ººÉʱ¼ä¶ÎÔËÐÐ×÷Òµ£¬»òÕßÔÚÒ»ÖÜ»òÒ»ÔÂÖеò»Í¬Ê±¶ÎÔËÐÐatÃüÁÔÚÌØ¶¨Ê±¼äÔËÐÐÒ»Ð©ÌØÊâ×÷Òµ& ʹÓÃËüÔÚºǫ́ÔËÐÐÒ»¸öÕ¼ÓÃʱ¼ä²»³¤µÃ½ø³ÌNohup£¬Ê¹ÓÃËüÔÚºǫ́ÔËÐÐÒ»¸öÃüÁ¼´Ê¹ÔÚÓû§Í˳öʱҲ²»ÊÜÓ°Ïì¡£

cronºÍcrontab

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crontabµÄÓò

µÚ1ÁР ·ÖÖÓ1~59
µÚ2ÁР  Сʱ1~23
µÚ3ÁР  ÈÕ1-31
µÚ4ÁР  ÔÂ1~12
µÚ5ÁР  ÐÇÆÚ0~6
µÚ6ÁР  ÒªÔËÐеÄÃüÁî

¾ÙÀý

 

30 21 * * * /apps/bin/clearnup.sh
ÿÍíµÄ21:30ÔËÐÐ/apps/binĿ¼ÏµÄcleanup.sh

45 4 1,10,22 * * /apps/bin/backup.sh
ÿÔµÄ1£¬20£¬22ºÅµÄ4:45Ö´ÐÐ/apps/bin Ŀ¼Ï嵀 backup.sh

10 1 * * 6,0 /bin/find -name "core" rm {} \;
ÿ¸öÐÇÆÚÁù¡£ÈÕ1:10ÔËÐÐÒ»¸öfind ÃüÁî

0,30 18-23 * * * /apps/bin/dbcheck.sh
ÿÌìÔÚ18:00~23:00ÿ¸ô30·ÖÖÓÖ´ÐÐ/apps/binĿ¼ÏµÄdbcheck.sh

0 23 * * 6 /apps/bin/qtrend.sh
ÿÖÜÁùµÄ23:00Ö´ÐÐ/apps/bin/qtrend.sh

crontabµÄÃüÁîÑ¡Ïî

crontab [-u user] -e -l -r
-u Óû§Ãû
-e ±à¼­crontabÎļþ
-l ÁгöcrontabÎļþµÄÄÚÈÝ
-r ɾ³ýcrontabÎļþ

´´½¨Ò»¸öcrontabÎļþ

crontab ÎļþÃû

ÁгöcrontabÎļþ

crontab -l
crontab -l >$HOME/faintbearcron

±à¼­/ɾ³ýcrontabÎļþ

crontab -r / crontab -e

»Ö¸´¶ªÊ§µÄcrontabÎļþ

crontab <filename>
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