Managing Your Debian System
Some of the basic tasks that you may encounter while running Debian GNU/Linux include package
installation, configuration, and removal, as well as handling some special situations that you may
come across.
All these steps require that you be logged in as the superuser (root). If you have just finished
installing the system, you can log in as root from the login prompt.
Configuring Network Connections
Debian includes a set of tools for managing most types of network interfaces, including Ethernet,
PPP, wireless, and even ATM. You may find that you need to add or change network settings after
the system has been installed.
IP Networks: Ethernet and Wireless
On Debian systems, standard network connections are configured in the /etc/network/ interfaces
file. If you have a network card configured to obtain an IP address automatically,
the file will look like this:
# 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
# The primary network interface auto eth0 iface eth0 inet dhcp
CAUTION
Do not modify the loopback entry unless you are absolutely certain that you know
what you are doing.
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