elevator: serve

-- pastebin: MwaaJDxA

local side = "back"

function repl()
  while true do
    io.write("$ ")
    local target = io.read()
    io.write("\nGoing " .. target)
    rednet.send(1, target)
    io.write("\n")
  end
end

function main()

  term.clear()
  term.setCursorPos(1, 1)

  io.write("Welcome! Available commands are:\n")
  io.write("  up     elevator goes up.\n")
  io.write("  down   elevator goes down.\n")

  rednet.open(side)
  repl()
  rednet.close(side)
end

main()