dupd

#!/usr/bin/env ruby

require 'digest'

paths = ARGV.map{|v| Dir[v]}.flatten.uniq

def codehash(path)
  Digest::MD5.hexdigest(File.read(path).gsub(/[\s;<>"]/,'').downcase)
end

hashes = {}

# calc code hash
paths.each do |path|
  hash = codehash(path)
  hashes[hash] ||= []
  hashes[hash] << path
end

# ouput duplicated
hashes.select {|k,v| v.size > 1}.each do |k, v|
  puts v.join("\t")
end