gedit /etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.0.200
netmask 255.255.255.0
gateway 192.168.0.1

#auto wlan0
#iface wlan0 inet dhcp

sudo /etc/init.d/networking restart

照此思路，修改 /etc/network/interfaces ，无线网卡也能用了

把文件中对应无线网卡的部分修改为如下形式
auto eth1
iface eth1 inet static
wireless-rate 54M
wireless-essid TP-LINK
wireless-key AAAAABBBBB
address 192.168.1.140
netmask 255.255.255.0
gateway 192.168.1.1