作為一名Linux SA，日常運維中很多地方都會用到腳本，而服務器的ip一般采用靜態ip或者MAC綁定，當然后者比較操作起來相對繁瑣，而前者我們可以設置主機名、ip信息、網關等配置。修改成特定的主機名在維護和管理方面也比較方便。如下腳本用途為：修改ip和主機名等相關信息，可以根據實際需求修改，舉一反三！
#!/bin/sh #auto Change ip netmask gateway scripts #wugk 2012-12-17 cat << EOF ++++++++自動修改ip和主機名等相關信息+++++++++ 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 定義變量，可以根據實際情況修改 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 #定義change_ip函數 function Change_ip () { #判斷備份目錄是否存在，中括號前后都有空格，！嘆號在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" $ETHCONF #如下$?用來判斷上一次操作的狀態，為0，表示上一次操作狀態正確或者成功# if [ $? -eq 0 ];then #read -p 交互輸入變量IPADDR，注冒號后有空格，sed -i 修改配置文件# read -p "Please insert ip Address:" IPADDR sed -i 's/dhcp/static/g' $ETHCONF #awk -F. 意思是以.號為分隔域，打印前三列# echo -e "IPADDR=$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}'`) #定義數組， ${#count[@]}代表獲取變量值總個數# A=${#count[@]} #while條件語句判斷，個數是否正確，不正確循環提示輸入，也可以用[0-9]來判斷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 可以連續修改多個參數# sed -i -e 's/^IPADDR/#IPADDR/g' -e 's/^NETMASK/#NETMASK/g' -e 's/^GATEWAY/#GATEWAY/g' $ETHCONF #echo -e /n為連續追加內容，并自動換行# echo -e "IPADDR=$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 } #定義hosts函數 ############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############### #定義network函數 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 } #PS3一般為菜單提示信息# PS3="Please Select ip or hosts Menu": #select為菜單選擇命令，格式為select $var in ..command.. do .... done select i in "Change_ip" "Change_hosts" "Change_network" do #case 方式，一般用于多種條件下的判斷 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新聞熱點
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