#!/bin/bash #update:2013-02-25 #author:ihuotui #version 0.1 cdate=$(date '+%Y%m%d') num=$(ifconfig -a | grep eth | wc -l) echo "ethX=" $num >> ethX for ((n=1;n<${num};n++))     do        if [ -e /etc/sysconfig/network-scripts/ifcfg-eth${n} ] ; then            sed -i '/HWADDR/d' /etc/sysconfig/network-scripts/ifcfg-eth${n}            ifconfig -a | grep "eth${n}" | awk '{print "HWADDR=\""$5"\""}' >> /etc/sysconfig/network-scripts/ifcfg-eth${n}          else            touch /etc/sysconfig/network-scripts/ifcfg-eth${n}            ifconfig -a | grep "eth${n}" | awk '{print "HWADDR=\""$5"\""}' >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            echo NM_CONTROLLED="\"yes\"" >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            echo ONBOOT="\"yes\"" >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            echo TYPE="\"Ethernet\"" >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            echo BOOTPROTO="\"dhcp\"" >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            echo UUID="\"2460e474-fad8-4b46-baba-da6f45ae158"${n}"\"" >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            echo DEVICE="\"eth"${n}"\"" >> /etc/sysconfig/network-scripts/ifcfg-eth${n}            continue        fi     done