Tree farm

--Simply place the turtle with saplings on the selected slot and start the program. It needs fuel to work

function FarmTree()
    local has_block, data = turtle.inspect()
    if (has_block == false or string.find(data.name, "_log") == nil) then
        return
    end

    -- Go up and mine
    while (has_block and string.find(data.name, "_log")) do
        turtle.dig()
        turtle.digUp()
        turtle.up()
        has_block, data = turtle.inspect()
    end

    -- Return down
    has_block, data = turtle.inspectDown()
    while(has_block == false) do
        turtle.down()
        has_block, data = turtle.inspectDown()
    end

    --Replant
    data = turtle.getItemDetail()
    if (string.find(data.name, "_sapling")) then
        turtle.place()
    end
end

-- Main
while (true) do
    FarmTree()
    sleep(10)
end