APT Repository for Old Ubuntu Releases

To get back on the repository train, edit your /etc/apt/sources.list and
replace all instances of archive.ubuntu.com and security.ubuntu.com with the very fitting old-releases.ubuntu.com. After that, run sudo apt-get update and watch the repository indexes roll in!

Here is an example of an updated /etc/apt/sources.list for Ubuntu 6.06 (Dapper):

## Uncomment the following two lines to fetch updated software from the network deb http://old-releases.ubuntu.com/ubuntu dapper main restricted deb-src http://old-releases.ubuntu.com/ubuntu dapper main restricted ## Uncomment the following two lines to fetch major bug fix updates produced ## after the final release of the distribution. deb http://old-releases.ubuntu.com/ubuntu dapper-updates main restricted deb-src http://old-releases.ubuntu.com/ubuntu dapper-updates main restricted ## Uncomment the following two lines to add software from the 'universe' ## repository. ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## universe WILL NOT receive any review or updates from the Ubuntu security ## team. deb http://old-releases.ubuntu.com/ubuntu dapper universe deb-src http://old-releases.ubuntu.com/ubuntu dapper universe deb http://old-releases.ubuntu.com/ubuntu dapper-security main restricted deb-src http://old-releases.ubuntu.com/ubuntu dapper-security main restricted deb http://old-releases.ubuntu.com/ubuntu dapper-security universe deb-src http://old-releases.ubuntu.com/ubuntu dapper-security universe deb http://old-releases.ubuntu.com/ubuntu dapper multiverse deb-src http://old-releases.ubuntu.com/ubuntu dapper multiverse deb http://old-releases.ubuntu.com/ubuntu dapper-backports main restricted universe multiverse

local network repository:

deb http://192.168.0.10/ubuntu hardy main restricted universe multiverse

deb http://192.168.0.10/ubuntu hardy-updates main restricted universe multiverse

deb http://192.168.0.10/ubuntu hardy-security main restricted universe multiverse

Extra Repositories

In addition to the officially supported package repositories available for Ubuntu, there exist additional community-maintained repositories which add thousands more potential packages for installation. Two of the most popular are the Universe and Multiverse repositories. These repositories are not officially supported by Ubuntu, but because they are maintained by the community they generally provide packages which are safe for use with your Ubuntu computer.

	Packages in the Multiverse repository often have licensing issues that prevent them from being distributed with a free operating system, and they may be illegal in your locality.
	Be advised that neither the Universe or Multiverse repositories contain officially supported packages. In particular, there may not be security updates for these packages.

Many other package sources are available, sometimes even offering only one package, as in the case of package sources provided by the developer of a single application. You should always be very careful and cautious when using non-standard package sources, however. Research the source and packages carefully before performing any installation, as some package sources and their packages could render your system unstable or non-functional in some respects.
By default, the Universe and Multiverse repositories are enabled but if you would like to disable them edit /etc/apt/sources.list and comment the following lines:

deb http://archive.ubuntu.com/ubuntu hardy universe multiverse

deb-src http://archive.ubuntu.com/ubuntu hardy universe multiverse