Getting 4Pane
Online Manual

Using apt-get to install 4Pane

Before you can use the 4Pane repository, you need to tell the apt-get setup that it exists. You do this by adding the appropriate url to apt-get's list of known repositories, /etc/apt/sources.list. You must be the superuser to do this, so either su to root (debian, mepis, PCLinuxOS), or prefix sudo to everything (or do sudo bash) (*buntu).

First you may wish to make a backup of your current settings:
cp /etc/apt/sources.list /etc/apt/sources.list.bak

Then either use your favourite text editor to add the appropriate line, or do (using debian wheezy as an example):
echo "deb http://www.4pane.co.uk/debian/ wheezy contrib" >> /etc/apt/sources.list

The line to add is different for different distros/versions; choose the appropriate one:
debian squeeze: deb http://www.4pane.co.uk/debian/ squeeze contrib
debian wheezy: deb http://www.4pane.co.uk/debian/ wheezy contrib
debian jessie: deb http://www.4pane.co.uk/debian/ jessie contrib
ubuntu precise: deb http://www.4pane.co.uk/ubuntu/ precise universe
ubuntu quantal: deb http://www.4pane.co.uk/ubuntu/ quantal universe
ubuntu raring: deb http://www.4pane.co.uk/ubuntu/ raring universe
ubuntu saucy: deb http://www.4pane.co.uk/ubuntu/ saucy universe
ubuntu trusty: deb http://www.4pane.co.uk/ubuntu/ trusty universe
ubuntu utopic: deb http://www.4pane.co.uk/ubuntu/ utopic universe
ubuntu vivid: deb http://www.4pane.co.uk/ubuntu/ vivid universe

Next tell apt about the 4Pane public key (remove the 'sudo' if you've already su'ed):
wget -O - http://www.4pane.co.uk/4Pane.asc | sudo apt-key add -
or, rather faster to type:
apt-key adv --fetch-keys http://www.4pane.co.uk/4Pane.asc

You then need to do:
apt-get update
apt-get install 4pane

and 4Pane should be both downloaded and installed.

Alternatively, use an apt-get front end e.g. synaptic to add the repository and do the install.