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#!/usr/bin/env ruby

DEFAULT_PORT = 3000

puts (`ps aux | grep [r]uby | grep script/server`.split("\n").map { |l| 
  server = l.split(/\s+/)[11..-1]
  (port = server.index('-p')) ? server[port.next].to_i : DEFAULT_PORT
}.max || DEFAULT_PORT - 1).next