Change

my %opts = ();
my %opts=(GetOptions(
            'help|?'     => \$help,
            'server'     => \$server,
            'user'     => \$user,
            'password'     => \$password
           ));
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to

GetOptions(
            'help:+'     => \$help,
            'server=s'     => \$server,
            'user=s'     => \$user,
            'password=s'     => \$password,
    );
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and use the variables directly, not the hash.

Edit: fixed the code according to the follow-up postings.

should get you started