Well something is working right because I got no errors.

However, nothing was written to either file.

This is the code now.

use warnings;
use strict;
use autodie;

open IN, "<D:\\baseline_pattern.txt";
binmode IN;
my @content = <IN>;
close IN;

foreach my $num (qw/0 1/) {
    my @count = ("@content" =~ /$num+/sg);
    open my $fh, ">iterations_$num.txt";
    print $fh "$_\n" for @count;
    close $fh;
}
[download]

Should the '>' in front of iterations be a '>>' for appending?

How can I fully qualify where the files are that data should be written?

I can barely make sense of what is going on in this script