Three quick tips -- warnings, strict, and diagnostics. Perl has the ability to diagnose some dodgy programming practices. It's pretty good at helping you discover what's wrong.
Your script should start out something like this:
#!/usr/bin/perl -w
use strict;
use diagnostics;
On NT, you may have to call it with the command
perl -w scriptname so the warning goes into effect.
You'll probably end up with pages full of things to check. Log them to a file and do what they recommend.
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