in reply to Re^2: Checking for multiple instances
in thread Checking for multiple instances

I can't find my working example right now, but from memory, something like this: 
#!/usr/bin/perl
use Fcntl qw(LOCK_EX LOCK_NB);
flock DATA, LOCK_EX | LOCK_NB or die "Already executing!";
... rest of code ...
# do not remove this __END__!
__END__

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-- Randal L. Schwartz, Perl hacker
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Re^4: Checking for multiple instances
by Your Mother (Archbishop) on Sep 25, 2004 at 06:41 UTC

    Thanks, that's plenty, I'm sure. I was just a'scared there might be a trick to it that was different from vanilla flock'ing.

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