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#!/bin/sh
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#auto Change ip netmask gateway scripts
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#wugk 2012-12-17
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cat <<EOF
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++++++++自动修改ip和主机名等相关信息+++++++++
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ETHCONF=/etc/sysconfig/network-scripts/ifcfg-eth0
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HOSTS=/etc/hosts
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NETWORK=/etc/sysconfig/network
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DIR=/data/backup/`date +%Y%m%d`
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NETMASK=255.255.255.0
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+++++++++-------------------------+++++++++++
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EOF
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#Define Path 定义变量，可以根据实际情况修改
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ETHCONF=/etc/sysconfig/network-scripts/ifcfg-eth0
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HOSTS=/etc/hosts
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NETWORK=/etc/sysconfig/network
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DIR=/data/backup/`date +%Y%m%d`
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NETMASK=255.255.255.0
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echo "================================================"
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echo
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#定义change_ip函数
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function Change_ip ()
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{
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#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#
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if
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[ ! -d $DIR ];then
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mkdir -p $DIR
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fi
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echo "Now Change ip address ,Doing Backup Interface eth0"
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cp $ETHCONF $DIR
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grep "dhcp" $ETHCONF
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#如下$?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#
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if
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[ $? -eq 0 ];then
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#read -p 交互输入变量IPADDR，注冒号后有空格，sed -i 修改配置文件#
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read -p "Please insert ip Address:" IPADDR
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sed -i 's/dhcp/static/g' $ETHCONF
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#awk -F. 意思是以.号为分隔域，打印前三列#
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echo -e "IPADDR=$IPADDR\nNETMASK=$NETMASK\nGATEWAY=`echo $IPADDR|awk -F. '{print $1"."$2"."$3}'`.254" >>$ETHCONF
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echo "This IP address Change success !"
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else
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echo -n "This $ETHCONF is static exist ,please ensure Change Yes or NO":
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read i
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fi
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if
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[ "$i" == "y" -o "$i" == "yes" ];then
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read -p "Please insert ip Address:" IPADDR
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count=(`echo $IPADDR|awk -F. '{print $1,$2,$3,$4}'`)
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#定义数组， ${#count[@]}代表获取变量值总个数#
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A=${#count[@]}
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#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#
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while
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[ "$A" -ne "4" ]
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do
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read -p "Please re Inster ip Address,example 192.168.0.11 ip": IPADDR
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count=(`echo $IPADDR|awk -F. '{print $1,$2,$3,$4}'`)
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A=${#count[@]}
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done
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#sed -e 可以连续修改多个参数#
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sed -i -e 's/^IPADDR/#IPADDR/g' -e 's/^NETMASK/#NETMASK/g' -e 's/^GATEWAY/#GATEWAY/g' $ETHCONF
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#echo -e \n为连续追加内容，并自动换行#
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echo -e "IPADDR=$IPADDR\nNETMASK=$NETMASK\nGATEWAY=`echo $IPADDR|awk -F. '{print $1"."$2"."$3}'`.254" >>$ETHCONF
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echo "This IP address Change success !"
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else
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echo "This $ETHCONF static exist,please exit"
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exit $?
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fi
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}
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#定义hosts函数
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############function hosts##############
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function Change_hosts ()
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{
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if
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[ ! -d $DIR ];then
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mkdir -p $DIR
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fi
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cp $HOSTS $DIR
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read -p "Please insert ip address": IPADDR
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host=`echo $IPADDR|sed 's/\./-/g'`
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cat $HOSTS |grep 127.0.0.1 |grep "$host"
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if
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[ $? -ne 0 ];then
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sed -i "s/127.0.0.1/127.0.0.1 $host/g" $HOSTS
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echo "This hosts change success "
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else
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echo "This $host IS Exist .........."
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fi
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}
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###########fuction network###############
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#定义network函数
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function Change_network ()
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{
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if
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[ ! -d $DIR ];then
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mkdir -p $DIR
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fi
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cp $NETWORK $DIR
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read -p "Please insert ip address": IPADDR
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host=`echo $IPADDR|sed 's/\./-/g'`
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grep "$host" $NETWORK
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if
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[ $? -ne 0 ];then
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sed -i "s/^HOSTNAME/#HOSTNAME/g" $NETWORK
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echo "NETWORK=$host" >>$NETWORK
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else
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echo "This $host IS Exist .........."
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fi
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}
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#PS3一般为菜单提示信息#
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PS3="Please Select ip or hosts Menu":
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#select为菜单选择命令，格式为select $var in ..command.. do .... done
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select i in "Change_ip" "Change_hosts" "Change_network"
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do
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#case 方式，一般用于多种条件下的判断
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case $i in
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Change_ip )
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Change_ip
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;;
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Change_hosts )
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Change_hosts
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;;
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Change_network )
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Change_network
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;;
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*)
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echo
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echo "Please Insert $0: Change_ip(1)|Change_hosts(2)|Change_network(3)"
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echo
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;;
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esac
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done
