def continue
    puts "Press any key to break"
    $stdin.gets
end

port = ARGV[0]
if not port
    puts "ngrok.rb [port]"
    exit
end

`ngrok http #{port} > /dev/null &`
sleep 5
puts url = `curl -s http://localhost:4040/api/tunnels`.scan(/(https:\/\/\w*\.ngrok\.io)/).to_a.join
continue
`ps aux | grep ngrok | awk '{print $2}' | xargs kill -9 `