Unix stuff

Ubuntu:

To renew an IP address, type: dhclient

To set a static ip address, edit: /etc/network/interfaces

adjust it to your needs (in this example setup I will use the IP address 192.168.0.100):

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).

# The loopback network interface

auto lo

iface lo inet loopback

# This is a list of hotpluggable network interfaces.

# They will be activated automatically by the hotplug subsystem.

mapping hotplug

script grep

map eth0

# The primary network interface

auto eth0

iface eth0 inet static

address 192.168.0.100

netmask 255.255.255.0

network 192.168.0.0

broadcast 192.168.0.255

gateway 192.168.0.1