The simplest solution is to have the script run the loop once. Then in your crontab do something like: 
* 14-16/5 * * 1-5 your/command

[download]
That will start your script every 5 minutes, on the minute, from 2-4 PM on Monday through Friday.

In reply to Re (tilly) 1: Cron Question by tilly
in thread Cron Question by Anonymous Monk

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