#!/bin/sh
#
# Trivial script to change the MAC address
# You can define some easy to remember aliases by editing the source
#   by Mario Vilas (mvilas@gmail.com)
#

# if run with no parameters use the default
MAC="${1}"
if [ -z "${MAC}" ]
then
  MAC="default"
fi

# ensure that the script is run as root
if [ `id -u` != 0 ]
then
  if [ "${2}" = "" ]
  then
    sudo ${0} ${MAC} ALREADY_SUDOED
    exit
  else
    echo "ERROR: this script is intended to be run as root"
    exit 1
  fi
fi

# some easy-to-remember aliases
case "${MAC}" in

default) MAC="00:1E:8C:41:2A:74" ;;
casa)    MAC="00:11:22:33:44:55" ;;
# add more aliases here...

esac

# do the magic :)
ifconfig eth0 down
ifconfig eth0 hw ether ${MAC}
ifconfig eth0 up
ifconfig eth0 | grep HWaddr