TreeChopper

--2x2 Tree Chopper by mtbfreak
--Variables
local height = 0

--Functions
function chopUp()
    turtle.digUp()
    turtle.up()
    turtle.dig()
    height = height + 1
end

function moveOver()
    turtle.turnLeft()
    turtle.dig()
    turtle.forward()
    turtle.turnRight()
    turtle.dig()
end

function chopDown()
    turtle.digDown()
    turtle.down()
    turtle.dig()
end

--Main Script
turtle.dig()
turtle.forward()
turtle.dig()

while turtle.detectUp() == true do
    chopUp()
end

moveOver()

for i = 1, height, 1 do
    chopDown()
end

shell.run("go right forward left back")