If you're importing a function from another package with the same name as a function in the existing package, you may also see this error: 
$ perl -w
use strict;
sub param {}
use CGI qw( :standard );

Subroutine param redefined at /usr/lib/perl5/5.10.1/CGI.pm line 235.

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In reply to Re: see perl output before run by chromatic
in thread see perl output before run by Anonymous Monk

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