#!/bin/sh

# extract MAC addresses from ip neigh (only valid MACs)
for mac in $(ip neigh | awk '{print $5}' | grep -E '^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$'); do
    echo "Sending WoL to $mac"
    etherwake "$mac" 2>/dev/null
    wakeonlan "$mac" 2>/dev/null
done