如何设置cron每隔一个半小时运行某些命令？ [英] How can I set cron to run certain commands every one and a half hours?

问题描述

如何设置cron每一个半小时运行某些命令？

How can I set cron to run certain commands every one and a half hours?

推荐答案

表达式在正常 cron 。

无需修改代码就可以做到最好：

The best you could do without modifying the code is:

0 0,3,6,9,12,15,18,21 * * * [cmd]

30 1,4,7,10,13,16,19,22 * * * [cmd]

这些可能是可压缩的，具体取决于cron的版本：

These might be compressible, depending on the version of cron you have to:

0 * / 3 * * * [cmd]

30 1-23 / 3 * * * [cmd]

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