I'd use a Lockfile.
As an idea: Open the file for writing, lock it (or stop here, if it is already locked), write your PID in it (I like to know the pid's of running processes) and unlock (and close of course) it when you're done.

That's just an idea. If someone knows con's about this technique, please tell :)

ruoso's suggestion seems much more verbose.
Ordinary morality is for ordinary people. -- Aleister Crowley

In reply to Re: self detecting script by phaylon
in thread self detecting script by InfiniteLoop

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