ip link | awk '/</ { print $2 }' | awk -F: '!/lo/ {print $1}'

readarray -t interfaces < <(ip link | grep "<" | cut -d " " -f 2 | cut -d ":" -f 1 | grep -v lo)
total=$(echo ${interfaces[@]} | wc -w)


echo Hay $total en total
echo
for mac in "${interfaces[@]}"; do
	perm=$(macchanger -s $mac | grep Permanent | cut -d " " -f 3)
	actu=$(macchanger -s $mac | grep Current | cut -d " " -f 5)
done
    if [ $perm = $actu ]; then
      echo Vamos a cambiar tus MAC porque $perm es igual a $actu
    else
      echo Vamos a resturar tus MAC porque $perm es distinto a $actu
    fi