一.查看網口狀態：

????????$?ip a

二.配置靜態IP文件：

????????$ sudo vi /etc/network/interface

auto?eth0
iface eth0 inet static
address 192.168.0.252
gateway 192.168.0.1
netmask 255.255.255.0
#network 192.168.0.0
#broadcast 192.168.0.255

三.重啟網卡讓新配置生效

????????$ sudo ifdown eth0?
?????????$ sudo ifup eth0