Here is a solution that uses
Path::Tiny. See
Path::Tiny: The little module that keeps on giving for a nice introduction to Path::Tiny.
#!/usr/bin/env perl
use strict;
use warnings;
use Path::Tiny;
my $dir = shift or die 'No directory given';
my $dir_path = path($dir);
unless($dir_path->is_dir){
die "$dir is not a directory";
}
my %files_of;
foreach my $file_path ($dir_path->children){
my $digest = $file_path->digest; # default is SHA-256
#my $digest = $file_path->digest('MD5'); # use this if you want MD
+5
push @{$files_of{$digest}}, $file_path->basename;
}
foreach my $digest (keys %files_of){
my @files = @{$files_of{$digest}};
if( scalar @files > 1){
print join(', ', @files), " are duplicates.\n";
}
}
exit;