find-duplicate-names.rb

#!/usr/bin/env ruby

require 'find'

Find.find('.')
  .inject({}) do |hash, path|
    base = path.gsub(/.*\//, '')
    (hash[base] ||= []) << path unless base.empty?
    hash
  end
  .select{ |k, v| v.size > 1 }
  .sort_by{ |k, v| k }
  .each do |k, v|
    puts "#{k}:"
    puts v.sort
    puts
  end