Change default language for the console:

1. Edit /home/USERNAME/.bash_profile
2. Add the line export LANG=de (example given for German)

Change keyboard for the console:

$ dpkg-reconfigure console-data

$ ifconfig eth0 | grep 'inet add' | awk '{print $2}' |cut -d ' ' -f 12 | cut -d: -f 2

Here is an example of a /etc/network/interface file defining static IP net access:

# 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 static
#iface eth0 inet dhcp
address 192.168.130.131
netmask 255.255.255.0
network 192.168.130.0
broadcast 192.168.130.255
gateway 192.168.130.79