Redirecting output on win32 from a script called by just its name is broken, see the release notes.

C:\temp>cat foo.pl
#!/usr/bin/perl -l

use strict;
use warnings;

print 'Foo';

__END__

C:\temp>foo
Foo

C:\temp>foo >foo.txt

C:\temp>cat foo.txt
Foo
[download]

use pl2bat, shipped with activestate perl. This will wrap your perl-script in a .bat-file, from which redirecting will work;

OTOH I'm new on cmd.exe, I've been on command.com (when using Windows) till just about one month ago, and there I had to use pl2bat, with which for some reason redirecting did not work. Which was a major pita and caused me to implement -i, -o switches for some of my commonly used scripts.