quarry Engine Steuerungs Programm

function clear()
        term.clear()
        term.setCursorPos(1,1)
end
print( "Copyright by TheBommel" )
print( "Ueberarbeitet by Birog" )
write( "Es wird nach Updates gesucht... " )
local response = http.get("http://pastebin.com/raw.php?i=f76ULPSr")
if response then
   print("Update-suche erfolgreich!")
   local sSource = response.readAll()
   response.close()
   local file = fs.open( "startup", "r" )
   local sTarget = ""
   if file then
          sTarget = file.readAll()
          file.close()
   end
   if sSource ~= sTarget then
          term.write("Updates gefunden!")
          file = fs.open( "startup", "w" )
          file.write( sSource )
          file.close()
          print( "Wurde herruntergeladen als - startup - -Datei")
          print("Programm wird Neugestartet!")
          shell.run("startup")
          return
   else
          print("Es sind keine Updates vorhanden!")
          print("Programm wird gestartet!")
          sleep(3)
          clear()
   end
else
   clear()
   print("ERROR! Informiere bitte TheBommel!!")
   clear()
end
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rednet.open("top")
while true do
local id, msg, dist = rednet.receive()
    if msg == "ron" and id == 270 then
        redstone.setOutput("right", true)
                print(msg)
                rednet.send(287,msg)
        elseif msg == "lon" and id == 270 then
        redstone.setOutput("left", true)
                print(msg)
                rednet.send(287,msg)
    elseif msg == "roff" and id == 270 then
        redstone.setOutput("right", false)
                print(msg)
                rednet.send(287,msg)
        elseif msg == "loff" and id == 270 then
        redstone.setOutput("left", false)
                print(msg)
                rednet.send(287,msg)
    end
end