if (defined $min && defined $hour && defined $cmd) { # it isn't all of them, but should be enough to tell if this is a real line
$err .= parse($ref, 'min', $min, 0, 60);
if (defined $min && defined $hour && defined $cmd) { # it isn't all of them, but should be enough to tell if this is a real line
$err .= parse($ref, 'min', $min, 0, 60);