CC Item Transfer

local r_chest = peripheral.wrap("right")
local l_chest = peripheral.wrap("left")

local r_chest_size = r_chest.size()
local l_chest_size = l_chest.size()

for slot = 1, l_chest_size, 1 do
    local item = l_chest.getItemMeta(slot)

    if item ~= nil then
        if item.name == "minecraft:planks" then
            l_chest.pushItems("right", slot)
        end
    end
end