如何在Mac OS X中每天运行shell脚本或设置时间？

How can I run a shell script in Mac Os X at a certain time? I know it is something related to cron but I cannot figure it out. Can someone help me with the relevant code.

如何在特定时间在Mac Os X中运行shell脚本?我知道它与cron有关,但我无法弄明白。有人可以帮我提供相关代码。

1 个解决方案

#1

crontabs are files read by the cron daemon. They tell it to perform actions (such as running a shell script) at various times. More info here.

crontabs是cron守护进程读取的文件。它们告诉它在不同时间执行操作(例如运行shell脚本)。更多信息在这里。

http://www.macdevcenter.com/pub/a/mac/2001/12/14/terminal_one.html

In a Linux terminal I type:

在Linux终端中我键入:

crontab -e

An example would be

一个例子是

30  4   *   *   6   root    sh /etc/weekly  2>&1 | tee /var$ …

for a weekly run at 4:30

每周4:30运行一次

.---------------- minute (0 - 59) 
|  .------------- hour (0 - 23)
|  |  .---------- day of month (1 - 31)
|  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ... 
|  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7)  OR sun,mon,tue,wed,thu,fri,sat 
|  |  |  |  |
*  *  *  *  *  command to be executed

So every day, running foo at 2:00 would be ...

所以每天凌晨2点跑foo都会......

0  2  *  *  *  foo

The above tutorial contains OSX instructions for editing your crontab file!

上面的教程包含用于编辑crontab文件的OSX指令!

good luck

另请参阅:http://developer.apple.com/documentation/Darwin/Reference/Manpages/man5/crontab.5.html OSX crontab手册页

and

http://en.wikipedia.org/wiki/Cron

#1