digSquare.lua

x = 5
y = 5

for xi=1, x do
  for yi=1, y do
    turtle.digDown()
    turtle.dig()
    turtle.forward()
  end
  for yi=1, y do
    turtle.back()
  end
  turtle.turnRight()
  turtle.dig()
  turtle.forward()
  turtle.turnLeft()
end