修改IP腳本

 

#!/bin/sh
read -p "請輸入網卡設備名查看目前網卡配置，例如eth0 " eth
if [ -z  "${eth}" ]
   then
     echo -e "\e[1;32m必須輸入網卡名稱\e[0m"
     exit
else
ifconfig $eth |sed -ne 's/^.* inet addr:\([^ ]*\).* Bcast:\([^ ]*\).* Mask:\(.*$\)/IP:\1\nBcast:\2\nMASK:\3/gp'
read -p "是否替換？yes/no? " select
if [ ${select} = 'yes' ]
  then
    read -p "請輸入新的ip 不填寫則爲空地址 " ip
    read -p "請輸入新的網絡掩碼 不填寫則爲空地址 " mask
    read -p "請輸入新的網關 不填寫則爲空地址 " gw
    ifcfg=/etc/sysconfig/network-scripts/ifcfg-${eth}
    cp ${ifcfg} ${ifcfg}.bak
    gwadd=`grep GATEWAY /etc/sysconfig/network-scripts/ifcfg-${eth}`
    ifdown ${eth}
      if [ $? -eq 0 ]
         then
             sed -i "s/^IPADDR=.*/IPADDR=${ip}/g" $ifcfg
             sed -i "s/^NETMASK=.*/NETMASK=${mask}/g" $ifcfg
             sed -i "s/ONBOOT=no/ONBOOT=yes/g" $ifcfg
        if [ -n "${gw}" ]
           then
            ${gwadd}
               if [ $? -eq 0 ]
                  then
                     sed -i "s/^GATEWAY.*/GATEWAY=${gw}/g" $ifcfg
                  else
                     echo -e "\e[1;32mGATEWAY=${gw}\e[0m" >> $ifcfg
               fi
              route add default gw ${gw}
             else
               echo -e "\e[1;32m你沒有輸入網關，網關將設置爲空\e[0m"
         fi
        else
            echo -e "\e[1;32m對不起, ${eth} 關閉失敗\e[0m"
        exit 1
      fi
        ifup ${eth}
        ping -c 4 "${gw}" &
   if [ $? -eq 0 ]
      then
        echo -e "\e[1;32mIP修改成功！\e[0m"
   else
        echo -e "\e[1;32mIP修改失敗！\e[0m"
     fi
else
   echo -e "\e[1;32m你沒有選擇替換！拜拜！\e[0m"
fi
fi