Turtle Farm (v0.8) + Automatic Updates

-- Version 0.67
sleeptime = 60 * 40 -- 35 minutes
local pasteID = "http://pastebin.com/raw.php?i=dfVjxrHF"
pasteContent = http.get(pasteID)
Paste = pasteContent.readAll()
pasteContent.close()
function update()
    file = fs.open("startup","r")
    contents = file.readAll()
    file.close()
    if (Paste ~= contents) then
        print("Updating program...")
                shell.run("delete","startup")
        wFile = fs.open("startup","w")
        wFile.write(Paste)
        wFile.close()
        sleep(1)
        os.reboot()
    end
end
update()
turtle.forward()
turtle.turnLeft()
turtle.forward()
turtle.turnRight()
for i=0,11 do
    turtle.digDown()
    turtle.forward()
end
turtle.turnLeft()
turtle.forward()
turtle.digDown()
turtle.turnLeft()
for i=0,11 do
    turtle.digDown()
    turtle.forward()
end
turtle.turnRight()
turtle.forward()
turtle.digDown()
turtle.turnRight()
for i=0,11 do
    turtle.digDown()
    turtle.forward()
end
turtle.turnRight()
for i=0,2 do
    turtle.forward()
end
turtle.turnRight()
for i=0,10 do
    turtle.forward() -- go home
end
turtle.select(1)
turtle.turnRight()
turtle.forward()
turtle.turnRight()
turtle.placeDown()
for i=0,11 do
    turtle.placeDown()
    turtle.forward()
end
turtle.turnLeft()
turtle.forward()
turtle.placeDown()
turtle.turnLeft()
for i=0,11 do
    turtle.placeDown()
    turtle.forward()
end
turtle.turnRight()
turtle.forward()
turtle.placeDown()
turtle.turnRight()
for i=0,11 do
    turtle.placeDown()
    turtle.forward()
end
turtle.turnRight()
turtle.placeDown()
for i=0,2 do
    turtle.forward()
end
turtle.turnRight()
for i=0,11 do
    turtle.forward()
end
turtle.turnRight()
turtle.turnRight()
sleep(sleeptime)
os.reboot()