lphone:

An EXE file name isn't a valid perl statement. If you want perl to run the program, you have several choices. You can wrap it in backticks, like this:

#!/usr/bin/perl
use strict;
use warnings;
my $opt_f = shift;
# Do your option checking here...
`findfile.exe $opt_f`;
[download]

You could also use system("a command goes here"); to run it.

...roboticus