How to add extra repositories to dapper - you can find out which version you are running by entering the following command: cat /etc/issue
Fist Make a backup of the file:
sudo cp -p /etc/apt/sources.list /etc/apt/sources.list_backup
Next go to Run Command...
Ubuntu Users: gksudo gedit /etc/apt/sources.list
Kubuntu Users: kdesu kate /etc/apt/sources.list
If you prefer to use a <C>ommand <L>ine <I>nterpreter editor then sudo nano /etc/apt/sources.list
Then replace everything with the following lines
## Add comments (##) in front of any line to remove it from being checked.
## Use the following sources.list at your own risk.
deb http://archive.ubuntu.com/ubuntu dapper main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu dapper main restricted universe multiverse
## MAJOR BUG FIX UPDATES produced after the final release
deb http://archive.ubuntu.com/ubuntu dapper-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu dapper-updates main restricted universe multiverse
## UBUNTU SECURITY UPDATES
deb http://security.ubuntu.com/ubuntu dapper-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted universe multiverse
## BACKPORTS REPOSITORY (Unsupported. May contain illegal packages. Use at own risk.)
deb http://archive.ubuntu.com/ubuntu dapper-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu dapper-backports main restricted universe multiverse
## PLF REPOSITORY (Unsupported. May contain illegal packages. Use at own risk.)
deb http://packages.freecontrib.org/ubuntu/plf dapper free non-free
deb-src http://packages.freecontrib.org/ubuntu/plf dapper free non-free
## CANONICAL COMMERCIAL REPOSITORY (Hosted on Canonical servers, not Ubuntu
## servers. RealPlayer10, Opera and more to come.)
deb http://archive.canonical.com/ubuntu dapper-commercial main
Save the edited file
sudo apt-get update- You may also generate your own sources.list and find other repositories at: http://www.ubuntulinux.nl/source-o-matic
- You may also replace your sources.list with this very complete list: sources.list (be sure to replace "it" from "it.archive.ubuntu.com" with your country code. Use at own risk.
- Modify the default Ubuntu sources.list only if you understand what you're doing. Mixing repos can cause breakage.