You're going to want to use split. Your regex is only trying to match.. and it's trying to match something that looks like "/_.". Look at the following..

# get into the habit of using these.
# they will save you a lot of headaches.
use strict;
use warnings;

my $title = "/Text_Files/Cake_Rec.txt";
my @tokens = split /[\/_\.]/, $title;

foreach (@tokens) {
    print "$_\n";
}
[download]

split uses a regex to split apart a string. Within that regex we have a character class. The character class basically means it will use any one of the things in there to split on.

You should probably also read perlre. There's a lot of great info on how regex's work.

Hope this helps
Rich