Thanks. I think I now can build the solution using XML::Twig 
my $t= XML::Twig->new(load_DTD => 1,DTDHandler=>\&checkit )->parsefile
+( "$xmlfile");

 sub checkit
 {
     my ($twig, $dtd) = @_;
     my $root=$twig->root;
     my @text=$root->att_names;
     if (grep /schemaLocation/, @text) 
     {
            print "found schema\n";
    }
    else
    {
         if ($twig->{twig_doctype})
         {     
              print "found dtd\n";
         }
         else
         { 
                       print "no dtd/schema defined\n"
         }

    }
}

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In reply to Re^2: Quick check for XML DTD or Schema.. XML::Twig solution by ron800
in thread Quick check for XML DTD or Schema by ron800

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