Select Code to Download

set theWindowTitle to "PerlMonks"
set theOption to text returned of (display dialog "Enter a Source fold
+er:" & return default answer "" with title theWindowTitle)
set thePerlScript to quoted form of (POSIX path of ((choose file with 
+prompt "Select a script:") as Unicode text))
set theResult to do shell script thePerlScript & " -S " & theOption
display dialog "Result: " & theResult with title theWindowTitle

#!/usr/bin/perl
use strict;
...
my %options;
GetOptions(\%options, "SourceFolder=s");
print $options{SourceFolder};