A quick and dirty server script written in Ruby

ss

#!/usr/bin/env ruby
require 'webrick'
include WEBrick
port = ARGV[0] || 4567
puts "Starting server: http://#{Socket.gethostname}:#{port}"
server = HTTPServer.new(:Port=>port,:DocumentRoot=>Dir::pwd )
trap("INT"){ server.shutdown }
server.start

Put this script somewhere in your path (like /usr/local/bin) and assign executable privileges to it (chmod +x /usr/local/bin/ss)