pi@raspberrypi ~ $ cat /etc/network/interfaces
auto lo

iface lo inet loopback

iface eth0 inet static
adress 192.168.0.2
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
gateway 192.168.0.1

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp