Thanks for all the replies. I did figure out something...just create my own module, and automatically load it with PERL5OPT.

In your bashrc (or whichever) put

export PERL5OPT=-MLogger
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Then put this Logger.pm in your PERL5LIB

package Logger;
use strict;
use warnings;

print "Logger\n";
1;
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Of course this is just a rudimentary test. You could put whatever code you wanted in there....something to append to a logfile. I wonder if you would need to flock it, if a bunch of perl scripts were running constantly.