Wither Send Program

rednet.close("left")
rednet.open("left")

function Execute()
  term.setTextColor(colors.lime)

  rs.setOutput("bottom", true)
  sleep(.5)
  rs.setOutput("bottom", false)

  repeat
    local sndrId, msg, dist, prot = rednet.receive("UPDATE")
    if msg == "BUILD" then
      print("Currently building Teh Wither...")
    elseif msg == "REDST" then
      print("Currently killing Teh Wither...")
    elseif msg == "END" then
      print("Killed Teh Wither...")
      print("---------------------------")
    end
  until msg == "END"
end

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

clear()

while true do
  term.setTextColor(colors.white)
  local input = read()
  if input == "kill" then
    clear()
    Execute()
  elseif tonumber(input) ~= nil then
    clear()
    for i = 0, tonumber(input) do
      print("Running for the #"..input.." time..")
      Execute()
    end
  else
    clear()
    print("Either specify an amount or type 'KILL'")
  end

  sleep(1)
end