I'm just starting to use Getopt::Long "for real". I'd like to be able to call a sub and output useage info if the user puts in bad options or no options.

I tried this: 
#Print useage info
sub useage {
    print "\nNifty usage info should go here\n";
    exit;
}
my ($pass, $user, $config_file);

# Get our options from the commandline; print options if not correct
&usage if not (GetOptions('pass=s' => \$pass, 'user=s' => \$user, 'con
+fig=s' => \$config_file));

[download]
but apparently that's no good as GetOptions returns true even if no options are passed!

I suppose I can check the values of every option, but that seems like a kludge. What do the wise monks suggest?

Thanks,
ibanix

$ echo '$0 & $0 &' > foo; chmod a+x foo; foo;

In reply to Making Getopt::Long tell me if no parameters passed by ibanix

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