#!/bin/bash
mac=`ifconfig -a | grep "HWaddr" | cut -d " " -f 11`
echo "DEVICE=eth0" > /etc/sysconfig/network-scripts/ifcfg-eth0
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-eth0
echo "BOOTPROTO=dhcp" >> /etc/sysconfig/network-scripts/ifcfg-eth0
echo "HWADDR=$mac" >> /etc/sysconfig/network-scripts/ifcfg-eth0
service network restart