Fixing an IP address on a Raspberry Pi (and Debian in General)

pi@raspberrypi:~ $ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether b8:27:eb:a8:a3:b1 brd ff:ff:ff:ff:ff:ff inet 192.168.5.98/24 brd 192.168.5.255 scope global dynamic noprefixroute eth0 valid_lft 73610sec preferred_lft 62810sec inet6 fd91:92f5:342c:1:365d:bf0d:6de7:ee82/64 scope global dynamic mngtmpaddr noprefixroute valid_lft 7129sec preferred_lft 7129sec inet6 fe80::560c:68f9:eaac:86c6/64 scope link valid_lft forever preferred_lft forever

pi@raspberrypi:~ $ sudo vim /etc/network/interfaces

auto eth0 iface eth0 inet static address 192.168.5.5

sudo /etc/init.d/networking restart