Hello,
I wonder how I can set a cron job to run every two seconds. Under “Webmin > System > Scheduled cron job” I can set a script to run every minute, but not every two seconds.
How do I accomplish this?
Greetings Fredrik-s
Just read that this is not possible.
One work around is to make a loop with a sleep function. Counting down.
Howdy,
Yeah, you’re correct, Cron doesn’t handle frequencies less than one per minute.
As you saw – the only way to do that would be to write some code of your own that handled running your program every two seconds.
-Eric
Considering that cron needs to start processes for the tasks it performs, it’d probably not be a good idea to have it run something every two seconds, even if it was possible. 
A loop script that stays active and yields CPU cycles for two seconds each time it finishes its thing is much better.