startup

turtle.refuel()
write"How Long would you like the tunnel to be?:"
x = 0
bool = true
length = read()
while bool do
  turtle.dig()
  turtle.forward()
  turtle.turnLeft()
  turtle.dig()
  turtle.digUp()
  turtle.up()
  turtle.dig()
  turtle.digUp()
  turtle.up()
  turtle.dig()
  turtle.turnRight()
  turtle.turnRight()
  turtle.dig()
  turtle.down()
  turtle.dig()
  turtle.down()
  turtle.dig()
  turtle.down()
  turtle.dig()
  turtle.turnLeft()
  x = x + 1
  if x == length then
   print"Digging done"
   bool = false
   os.reboot()
  end
end