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How to run a Linux script every few seconds

Did you ever want to run a program every few seconds, or even fractions of a second, under a linux, unix, bsd or osx cron script? Here’s an elegant bash script that does just that.

Features:

It can run stand alone or as a service – does not need cron
Launches multiple programs in parallel.

Multiple time periods supported simultaneously just by the directory name.

2 companion programs to support odd time periods like 37 seconds or 37 minutes.

All standard bash stuff that should run on any *nix systems
Monit script included to keep it alive.

Simple, elegant, documented, complete, free
It just works.