I've got a couple of suggestions.

1. It's good practice to add the following lines to the start of your code:

   use strict;
   use warnings;  # <- this is the same as using the -w in the #! line
   use diagnostics;
   [download]

2. Find out the difference between ' ' (single quotes) and ` ` (backtics).

   Single quotes are related to strings.

   Backtics are related to system() and exec().

3. There was a couple of times in your post I was not sure if you meant "no" as in "no." short for number; or if you meant "no" like another way of saying "false".

Cheers,

Brent