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startup

filehandle=fs.open("commands.txt","w") or error("Cannot open file ", 2)
while true do
  os.sleep(0.1)
  h = redstone.getAnalogInput("front")
  if h>0 then
	  filehandle.writeLine("Down");
  else
	  filehandle.writeLine("Up");
  end
  filehandle.flush();
end
-- can never close the file, but hate to leave it like this...
filehandle.close();