gistfile1.txt

#!/usr/bin/ruby
#Dir.foreach('/Users/andybaxter/bind/*.com', 'r+').File.open do |line|

File.open("hq.internal.mx", 'r+').readlines.each do |line|
          domain = line.split.first
          ip = line.split.last
        if ip.include? "10."
          new_file = File.open('rev_10.rev', 'a')
          new_file.puts "#{ip}.in-addr.arpa. 60 IN PTR #{domain}"
        elsif ip.include? "172."
            new_file = File.new("rev_172.txt", "w+")
            new_file.puts "#{ip}.in-addr.arpa. 60 IN PTR #{domain}"
        else ip.include? "192."
            new_file = File.new("rev_192.txt", "w+")
            new_file.puts "#{ip.reverse}.in-addr.arpa. 60 IN PTR #{domain}"
        end

end