#!/usr/local/bin/perl -w #  print warnings
use strict;
use File::Find;

my $Start_dir = shift;

die ">$Start_dir< is not a directory\n" if !-d $Start_dir;

find( \&process, $Start_dir );

sub process {
      return if -f $File::Find::name; # This is success - the file exist
      return if -e  $File::Find::name;
      print ">$File::Find::name  < is not a file or was not found\n";
}