#!/usr/local/bin/perl -w # force taint checks, and 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 -e  $Start_dir
     # 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";
}