配置IP地址及HOSTNAME脚本

#!/bin/bash

#修改IP及HOSTNAME

 ETHCONF=/etc/sysconfig/network-scripts/ifcfg-eth0
 HOSTS=/etc/hosts
 NETWORK=/etc/sysconfig/network
 DIR=/root/backup/`date +%Y%m%d`
 NETMASK=255.255.255.0
 
 rm -rf /etc/udev/rules.d/70-persistent-net.rules

 function Change_ip ()
{
if [ ! -d $DIR ];then
 mkdir -p $DIR
fi

 echo "Now Change ip address ,Doing Backup Interface eth0"
 cp $ETHCONF $DIR 

 read -p "Please insert ip Address:" IPADDR
 sed -i "s/IPADDR=.*/IPADDR=$IPADDR/g" $ETHCONF
 echo "This IP address Change success !"

}

function Change_hosts ()
{ 

if [ ! -d $DIR ];then
 mkdir -p $DIR
fi

 cp $HOSTS $DIR
 echo "Please insert IP and HOSTNAME"
 read -p "Please insert ip address": IPADDR
 read -p "Please insert HOSTNAME": HOSTNAMES

if [ -n $IPADDR -a -n $HOSTNAMES ];then
 echo $IPADDR  $HOSTNAMES >> $HOSTS
 sed -i "s/HOSTNAME=.*/HOSTNAME=$HOSTNAMES/g" $NETWORK
 echo "This hosts change success "
else
 echo "This $host IS Exist .........."
fi

}

 PS3="Please Select ip or hosts Menu":
 select i in "Change_ip" "Change_hosts" "Reboot" "Quit" 

do
case $i in
  Change_ip )
  Change_ip
;;
  Change_hosts )
  Change_hosts
;;
  Reboot )
  sync;sync;sync;init
;;
  Quit )
  exit
;;
  *)
  echo
  echo "Please Insert $0: Change_ip(1)|Change_hosts(2)"
  echo
;;
esac
done

参考：http://www.jb51.net/article/56611.htm