#!/bin/bash
INTERFACES=`ifconfig | cut -c 1-8 | sort | uniq | egrep "\w+"`
for IFACE in $INTERFACES ; do
	MAC=`ifconfig $IFACE 2>/dev/null | grep HWaddr | sed 's/.*HWaddr //' | perl -pi -e 's/\s+//g'  | tr '[:lower:]' '[:upper:]'`
	if [ `echo $MAC | grep ":"` ] ; then
		echo "$IFACE: $MAC"
	fi
done
