crontab命令用于设置周期性被执行的指令。该命令从标准输入设备读取指令，并将其存放于“crontab”文件中，以供之后读取和执行。 可以使用crontab定时处理离线任务，比如每天凌晨2点更新数据等，经常用于系统任务调度。 每个用户都有自己的配置文件，使用 ...

"It is certainly a tool that every system administrator should be aware of and use to automate mundane routine tasks such as backups and taking applications offline." It's common to need an action ...

How to Know When You've Outgrown Cron Scheduling--and What to Do Next If you've spent any time around UNIX, you've no doubt learned to use and appreciate cron, the ...