Hi Monks I have this code (from here which was done for me, I'd log in but the system won't send me a new password) The question, does the code look correct for finding duplicate files, based on the output I'm getting it looks like it is checking size instead of name first? And if I may a second question, how do I output paths with the slash leaning the Windows way? The output is e.g. c:/Temp\testfolder I'm using the code through a C# GUI and the output needs to be \ for the whole path spat out. 
#!/usr/bin/perl -w

use strict;
use File::Find;
# No warnings so the output doesn't state which folders it 
# can't access (Windows issue)
no warnings 'File::Find';
use Digest::MD5;

local $| = 1;
#**************** File Scope Variables *********************   
my $path = $ARGV[0];
my $testpath = 'C:/Temp/';  
#***********************************************************

my %files;
my $wasted = 0;
print "Searching for duplicate files on $ARGV[0]\n";
find(\&check_file, $path);
#find(\&check_file, $ARGV[0] || $usbstick);
local $" = ",";
foreach my $size (sort {$b <=> $a} keys %files) {
  next unless @{$files{$size}} > 1;
  my %md5;
  foreach my $file (@{$files{$size}}) {
    open(FILE, $file) or next;
    binmode(FILE);
    push @{$md5{Digest::MD5->new->addfile(*FILE)->hexdigest}},$file."\
+n";
  }
  foreach my $hash (keys %md5) {
    next unless @{$md5{$hash}} > 1;
    print "\n@{$md5{$hash}}";
    print "File size $size";
    $wasted += $size * (@{$md5{$hash}} - 1);
  }
}

1 while $wasted =~ s/^([-+]?\d+)(\d{3})/$1,$2/;
print "\n$wasted bytes in duplicated files\n";

sub check_file {
  -f && push @{$files{(stat(_))[7]}}, $File::Find::name;
}

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In reply to File::Find duplicate question by Anonymous Monk

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