# Pastebin ElspxRbF
=begin
# just some stuff for debugging

Dir.glob"/proc/#{$$}/fd/*" do |fd|
  begin
    p fd => File.readlink(fd)
  rescue => ex
    p fd => ex
  end
end

1.upto 20 do |n|
  begin
    p IO.for_fd(n).read_nonblock(10)
  rescue => ex
    p n => ex
  end
end
=end

if $stdin.tty?
  file, term = IO.for_fd(11), IO.for_fd(0)
else
  file, term = IO.for_fd(0), IO.for_fd(1)
end

while (ready, _, _ = select([file, term]); ready)
  exit unless ready.include?(file)
  ready.each do |fd|
    got = fd.gets

    case fd
    when file
      p file: got
      exit unless got
    when term
      p term: got
    end
  end

  sleep 1
end