標籤:
作為一名Linux
SA,日常營運中很多地方都會用到指令碼,而伺服器的ip一般採用靜態ip或者MAC綁定,當然後者比較操作起來相對繁瑣,而前者我們可以設定主機名稱、ip資訊、網關等配置。修改成特定的主機名稱在維護和管理方面也比較方便。如下指令碼用途為:修改ip和主機名稱等相關資訊,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和主機名稱等相關資訊+++++++++
- 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 定義變數,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,中括弧前後都有空格,!歎號在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 互動輸入變數IPADDR,注冒號後有空格,sed -i 修改設定檔#
- read -p "Please insert ip Address:" IPADDR
- sed -i ‘s/dhcp/static/g‘ $ETHCONF
- #awk -F. 意思是以.號為分隔域,列印前三列#
- echo -e "IPADDR=$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, ${#count[@]}代表擷取變數值總個數#
- A=${#count[@]}
- #while條件陳述式判斷,個數是否正確,不正確迴圈提示輸入,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‘ $ETHCONF
- #echo -e \n為連續追加內容,並自動換行#
- echo -e "IPADDR=$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
-
- }
- #PS3一般為菜單提示資訊#
- 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,一般用於多種條件下的判斷
- 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
Linux Shell指令碼之自動修改IP