startup

local pullEvent = os.pullEvent
os.pullEvent = os.pullEventRaw

while true do
  term.clear()
  term.setCursorPos(1, 1)
  print("CreeperCity Computer Security")
  shell.run("time")
  write("Username: ")
  if read ("*") == "turtle" then
    term.clear()
    do
local pullEvent = os.pullEvent
os.pullEvent = os.pullEventRaw

while true do
  term.clear()
  term.setCursorPos(1, 1)
  print("CreeperCity Computer Security")
  shell.run("time")
  write("Password: ")
  if read("*") == "turtle" then
    print("Correct. You may now use the turtle")
    sleep(2)
    term.clear()
    term.setCursorPos(1, 1)
    break
  else
    print("Incorrect Password")
    sleep(1)
  end
end
os.pullEvent = pullEvent
else
print("No Such User")
sleep(1)
end
end
os.pullEvent = pullEvent