Mining Turd

sleeptime = 60 * 40 -- 35 minutes
maxFarm = 2
local pasteID = "http://pastebin.com/raw.php?i=PSMyySf2"
debug = true
pasteContent = http.get(pasteID)
Paste = pasteContent.readAll()
pasteContent.close()
function update()
        file = fs.open("mine","r")
        contents = file.readAll()
        file.close()
        if (Paste ~= contents) then
                print("Updating program...")
                shell.run("delete","mine")
                wFile = fs.open("mine","w")
                wFile.write(Paste)
                wFile.close()
                sleep(1)
                os.reboot()
        end
end
update()
term.clear()
term.setCursorPos(1,1)
print("Current Level (y): ")
curY = tonumber(io.read())
for i=1,curY-11 do
    i = i+1
    turtle.digDown()
    turtle.down()
end
for i=0,600 do
    if (i/20 == math.floor(i/20)) then
        turtle.turnRight()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.turnRight()
        turtle.turnRight()
        turtle.forward()
        turtle.forward()
        turtle.forward()
        turtle.forward()
        turtle.forward()
        turtle.turnRight()
    end
    turtle.dig()
    turtle.forward()
    turtle.digUp()
end