如何使用Shell脚本自动修改IP地址,针对这个问题,这篇文章详细介绍了相对应的分析和解答,希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
#!/bin/sh #auto Change ip netmask gateway scripts #wugk 2012-12-17 cat << EOF ++++++++自动修改ip和主机名等相关信息+++++++++ ETHCONF=/etc/sysconfig/network-scripts/ifcfg-eth0 HOSTS=/etc/hosts NETWORK=/etc/sysconfig/network DIR=/data/backup/`date +%Y%m%d` NETMASK=255.255.255.0 +++++++++-------------------------+++++++++++ EOF #Define Path 定义变量,可以根据实际情况修改 ETHCONF=/etc/sysconfig/network-scripts/ifcfg-eth0 HOSTS=/etc/hosts NETWORK=/etc/sysconfig/network DIR=/data/backup/`date +%Y%m%d` NETMASK=255.255.255.0 echo "================================================" echo #定义change_ip函数 function Change_ip () { #判断备份目录是否存在,中括号前后都有空格,!叹号在shell表示相反的意思# if [ ! -d $DIR ];then mkdir -p $DIR fi echo "Now Change ip address ,Doing Backup Interface eth0" cp $ETHCONF $DIR grep "dhcp" $ETHCONF #如下$?用来判断上一次操作的状态,为0,表示上一次操作状态正确或者成功# if [ $? -eq 0 ];then #read -p 交互输入变量IPADDR,注冒号后有空格,sed -i 修改配置文件# read -p "Please insert ip Address:" IPADDR sed -i 's/dhcp/static/g' $ETHCONF #awk -F. 意思是以.号为分隔域,打印前三列# echo -e "IPADDR=$IPADDR\nNETMASK=$NETMASK\nGATEWAY=`echo $IPADDR|awk -F. '{print $1"."$2"."$3}'`.254" >>$ETHCONF echo "This IP address Change success !" else echo -n "This $ETHCONF is static exist ,please ensure Change Yes or NO": read i fi if [ "$i" == "y" -o "$i" == "yes" ];then read -p "Please insert ip Address:" IPADDR count=(`echo $IPADDR|awk -F. '{print $1,$2,$3,$4}'`) #定义数组, ${#count[@]}代表获取变量值总个数# A=${#count[@]} #while条件语句判断,个数是否正确,不正确循环提示输入,也可以用[0-9]来判断ip# while [ "$A" -ne "4" ] do read -p "Please re Inster ip Address,example 192.168.0.11 ip": IPADDR count=(`echo $IPADDR|awk -F. '{print $1,$2,$3,$4}'`) A=${#count[@]} done #sed -e 可以连续修改多个参数# sed -i -e 's/^IPADDR/#IPADDR/g' -e 's/^NETMASK/#NETMASK/g' -e 's/^GATEWAY/#GATEWAY/g' $ETHCONF #echo -e \n为连续追加内容,并自动换行# echo -e "IPADDR=$IPADDR\nNETMASK=$NETMASK\nGATEWAY=`echo $IPADDR|awk -F. '{print $1"."$2"."$3}'`.254" >>$ETHCONF echo "This IP address Change success !" else echo "This $ETHCONF static exist,please exit" exit $? fi } #定义hosts函数 ############function hosts############## function Change_hosts () { if [ ! -d $DIR ];then mkdir -p $DIR fi cp $HOSTS $DIR read -p "Please insert ip address": IPADDR host=`echo $IPADDR|sed 's/\./-/g'` cat $HOSTS |grep 127.0.0.1 |grep "$host" if [ $? -ne 0 ];then sed -i "s/127.0.0.1/127.0.0.1 $host/g" $HOSTS echo "This hosts change success " else echo "This $host IS Exist .........." fi } ###########fuction network############### #定义network函数 function Change_network () { if [ ! -d $DIR ];then mkdir -p $DIR fi cp $NETWORK $DIR read -p "Please insert ip address": IPADDR host=`echo $IPADDR|sed 's/\./-/g'` grep "$host" $NETWORK if [ $? -ne 0 ];then sed -i "s/^HOSTNAME/#HOSTNAME/g" $NETWORK echo "NETWORK=$host" >>$NETWORK else echo "This $host IS Exist .........." fi } #PS3一般为菜单提示信息# PS3="Please Select ip or hosts Menu": #select为菜单选择命令,格式为select $var in ..command.. do .... done select i in "Change_ip" "Change_hosts" "Change_network" do #case 方式,一般用于多种条件下的判断 case $i in Change_ip ) Change_ip ;; Change_hosts ) Change_hosts ;; Change_network ) Change_network ;; *) echo echo "Please Insert $0: Change_ip(1)|Change_hosts(2)|Change_network(3)" echo ;; esac done
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