Crontab every 30 seconds

 

To run a cron every 30 seconds check following example:

* * * * * /path/to/your/script arg1 arg2
* * * * * (sleep 30; /path/to/your/script arg1 arg2)

In above example both commands will start at 0th second of every minute, but the second command will sleep for 30 seconds and then start.

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