1、找到網卡配置文件名
ls /etc/sysconfig/network-scripts/
2、備份並查看原始配置文件（若原先有配置IP的，則按照第五點方式修改）
3、修改隨機自啟和IP地址
echo -e "IPADDR=192.168.43.12 \nNETMASK=255.255.255.0 \nGATEWAY=192.168.43.1" >> /etc/sysconfig/network-scripts/ifcfg-ens33
sed -i "s/BOOTPROTO=dhcp/BOOTPROTO=static/" /etc/sysconfig/network-scripts/ifcfg-ens33
sed -i "s/ONBOOT=no/ONBOOT=yes/" /etc/sysconfig/network-scripts/ifcfg-ens33
4、重啟網卡生效
/etc/init.d/network restart
5、若原先有IP地址的，則按照以下方式修改
5.1 注釋掉原先的IP選項
sed -i "s/IPADDR/#IPADDR/" /etc/sysconfig/network-scripts/ifcfg-ens33
sed -i "s/NETMASK/#NETMASK/" /etc/sysconfig/network-scripts/ifcfg-ens33
sed -i "s/GATEWAY/#GATEWAY/" /etc/sysconfig/network-scripts/ifcfg-ens33
5.2 追加新的IP並修改開機自啟
echo -e "IPADDR=192.168.43.12 \nNETMASK=255.255.255.0 \nGATEWAY=192.168.43.1" >> /etc/sysconfig/network-scripts/ifcfg-ens33
sed -i "s/BOOTPROTO=dhcp/BOOTPROTO=static/" /etc/sysconfig/network-scripts/ifcfg-ens33
sed -i "s/ONBOOT=no/ONBOOT=yes/" /etc/sysconfig/network-scripts/ifcfg-ens33
5.3 重啟網卡
/etc/init.d/network restart