作为一名Linux SA，日常运维中很多地方都会用到脚本，而服务器的ip一般采用静态ip或者MAC绑定，当然后者比较操作起来相对繁琐，而前者我们可以设置主机名、ip信息、网关等配置。修改成特定的主机名在维护和管理方面也比较方便。如下脚本用途为：修改ip和主机名等相关信息，可以根据实际需求修改，举一反三！
- #!/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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本文出自 “吴光科-京峰教育Linux培训” 博客，请务必保留此出处http://wgkgood.blog.51cto.com/1192594/1092059