#!/bin/bash

# Types: wireless|wifi, ethernet
IF_WIRELESS="$(nmcli -t -f device,type dev status | grep -E "wireless|wifi" | cut -d":" -f1 | head -1)"

[ -z "${IF_WIRELESS}" ] &&
    echo "=> No hay interfaz wireless en el equipo" && exit 1

MAC_IF_WIRELESS="$(cat /sys/class/net/${IF_WIRELESS}/address)"
echo "${MAC_IF_WIRELESS}"
exit 0
