Her is the script I am trying- 
use strict;
use warnings;

my $text;
while (my $text = <DATA>) {
        # match a word that contain 'ou' or #
        if ($text =~ m/(ou)|(#)$/) {
        print $text; }
    
}

__DATA__
hello.world#
world\tour
Game.started


OUTPUT
hello.world#
world\tour

[download]
I also would like to filter any line that matches any of the following & replace with a (dash) - :
\/:*?"<>|

[download]
eg:
hello.world#
world-tour

Please let me know.

In reply to regex renaming by ArifS

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