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Here is a technique that I picked up here at the monastery a few years back, and have been using ever since:
use Fcntl 'LOCK_EX', 'LOCK_NB'; unless (flock DATA, LOCK_EX | LOCK_NB) { $logger->fatal("Found duplicate script run. Stopping"); exit; } __DATA__ This exists to allow the locking code at the beginning of the file to +work. DO NOT REMOVE THESE LINES!
If I can find the original node, I'll update with a link to it.
Update: Found it. this node by adamk.


In reply to Re: Lock File by McDarren
in thread Lock File by toniax

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