When I wrote this script, I didn't think to look for a module that did the same thing. However, I am pretty happy with the way this one turned out.

This script will look through a directory and return a list of all the files with the same filename and byte size with all of the files with the same content noted. A few user modifications will be needed to set an optional base directory or exclude certain files.

#!/usr/bin/perl
use strict;
use warnings;

use File::Compare;
use File::Find;

#If you want to set a base_directory, you can do so here.

my $base_directory;

print "What directory? ";
my $directory = <>;
chomp $directory;

my @file_list;
sub files_wanted {
  my $text = $File::Find::name;
  if ( -f ) {
    push @file_list, $text;
  }
}

#If you set a base directory above, you will need to change 
$directory to $base_directory.$directory.

find(\&files_wanted,$directory);

#This section creates a hash of arrays of files, with the hash keys be
+ing filename.ext and the file size in 
#parentheses. The raw file name is the entire path including the file 
+name.

my %files;
for my $raw_file (@file_list) {
  my @file_parts = split(/\//,$raw_file);
  my $file = pop @file_parts;
  my $file_size = -s $raw_file;
  push @{$files{"$file ($file_size bytes)"}}, $raw_file;
}

#This section searches the hash for any file with 2 or more files whic
+h share the same filename.ext and size.
#After that, it compares all of the files with those attributes to det
+ermine if they share the same contents.
#It will print the list of files with the same filename and size and w
+ill tell you which ones share the same 
#contents.

for my $file (sort keys %files) {
  if (@{$files{$file}} > 1) {
    my $amount = @{$files{$file}};
    print "$file\t\t$amount\n";
    for my $location1 (@{$files{$file}}) {
      print "\t$location1\n";
      for my $location2 (@{$files{$file}}) {
        unless ($location1 eq $location2) {
          if (compare($location1,$location2) == 0) {
            print "\t\tExact copy: $location2\n";
          }
        }
      }
    }
    print "\n";
  }
}
[download]

Update: This is my 100th write-up.

Have a cookie and a very nice day!

Lady Aleena

---

In reply to Find duplicate files with exact same files noted by Lady_Aleena

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