I guess you want something like this:
#!/usr/bin/env perl
use strict;
use warnings;
use Getopt::Long;
use Pod::Usage;
use Data::Dump;
my %options;
# Getopt::Long::Configure("no_ignore_case"); # perhaps you need it...
GetOptions( \%options, "device=i" );
pod2usage( -exitstatus => 0, -verbose => 2 ) unless defined $options{d
+evice};
dd \%options;
# stuff...
__END__
=pod
=head1 USAGE
Something went wrong.
=cut
Please see also Re: throw a warning if no argument were passed, Re: GetOpt Organization and Getopt::Long
Regards, Karl
«The Crux of the Biscuit is the Apostrophe»
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