script to tail robut log files. e.g 'ruby htail.rb http://minizord.corp.avvo.com/deploy_log/cloud_deploy_bugfix_11_15.log'

htail.rb

require 'open-uri'

printed = 0
begin
  open(ARGV[0]) do |file|
    `clear`
    index = 0
    file.each_line do |line|
      if index > printed
        print line
        printed += 1
      end
      index += 1
    end
  end # end begin
  sleep 1
end while true