The code can probably be condensed, but this will get you what you want. 
use strict;

use File::Basename qw(basename);

my @files = qw(
    /data/node12/file-29-2.txt
    /data/node12/file-34-2.txt
    /data/node12/file-50-2.txt
    /data/node30/file-34-2.txt
    /data/node30/file-60-2.txt
    /data/node30/file-62-2.txt
    /data/node34/file-29-2.txt
);

my %seen = ();

foreach my $file (@files) {
    my $bn = basename($file);
    if ($bn =~ /(\d+)/) {
        my $id = $1;
        if ($seen{$id}++) {
            print "$file needs to be deleted\n";
        }
    } else {
        warn "Unexpected file found: $file\n";
    }
}

[download]
- Miller

In reply to Re: Removing duplicate filenames in different directories from an array by wind
in thread Removing duplicate filenames in different directories from an array by Anonymous Monk

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