spawn("logflushd",function()
 local lt = os.time()
 while true do
  if os.time() > lt + 60 and Log:len() > 0 then
   local f = fs.open("/tmp/sys.log","ab")
   if f then
    for i = 1, #Log, 1024 do
    fs.write(f,Log:sub(i,i+1023))
    end
    fs.close(f)
    Log = ""
   end
  end
  coroutine.yield()
 end
end)