findBlocks

function findBlock(blockName)
    for slot = 1, 16 do
        local itemDetail = turtle.getItemDetail(slot)
        if itemDetail and itemDetail.name == blockName then
            return slot
        end
    end
    return nil
end

function findBlocks(blockName)
    local foundSlots = {}
    for slot = 1, 16 do
        local itemDetail = turtle.getItemDetail(slot)
        if itemDetail and itemDetail.name == blockName then
            table.insert(foundSlots, slot)
        end
    end
    return foundSlots -- Return a table containing slots with the block
end