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*/45 * * * * /bin/bash ~/code/shell/learn/notify.sh
12:45 执行一次
13:00 执行一次
另外,ubuntu 默认没有开启 crontab 日志,我取消 /etc/rsyslog.d/50-default.conf 中对 crontab 的注释
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cron.* /var/log/cron.log
谢谢各位兄台了!
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*/45 * * * * /bin/bash ~/code/shell/learn/notify.sh
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cron.* /var/log/cron.log
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$ ll /var/log/cron.log
-rw-r--r-- 1 root root 0 | 2011-09-21 | /var/log/cron.log
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Sep 24 15:25:01 king CRON[4963]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Sep 24 15:35:01 king CRON[5047]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Sep 24 15:45:02 king CRON[5092]: (ink) CMD (/bin/bash ~/code/shell/learn/notify.sh)
Sep 24 15:45:02 king CRON[5093]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Sep 24 15:55:02 king CRON[5119]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Sep 24 16:00:01 king CRON[5131]: (ink) CMD (/bin/bash ~/code/shell/learn/notify.sh)
Sep 24 16:05:01 king CRON[5140]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Sep 24 16:15:02 king CRON[5154]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
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*/45 * * * * /bin/bash ~/code/shell/learn/notify.sh