minetest.register_chatcommand("tempban", {
    params = "<name>",
    description = "Ban the IP of a player temporarily",
    privs = {server = true},
    func = function(name, param)
		if param == "" then
			minetest.chat_send_player(name, "Usage: /tempban <playername>")
			return
		end
		if minetest.get_player_by_name(param) == nil then
			minetest.chat_send_player(name, "The player doesn't exist.")
			return
		end

local putdatei = (io.open(minetest.get_worldpath().."/tempbans/"..minetest.get_player_ip(param)..".txt", "w"))
putdatei:write(os.time)
putdatei:close()
    end,
})