What are Backports

Ubuntu releases a new version of its OS every 6 months. After a release, the version of all packages stays constant for the entire 6 months. For example, if Ubuntu ships with Firefox 1.0.x, it will remain at Firefox 1.0.x for the entire 6-month release cycle, even if a later version gets released during this time. The Ubuntu team may apply important security fixes to 1.0.x, but any new features or non-security bugfixes won't be made available.

This is where Ubuntu Backports comes in. The Backports team believes that the best update policy is a mix of Ubuntu's security-only policy AND providing new versions of some programs. Candidates for version updates are primarily desktop applications, such as your web browser, word processor, IRC client, IM client, and so on. These can be updated without replacing a chunk of the operating system that would affect stability of the whole system.

Backports also include an extras repository which holds some packages which are not found in the official package collections. These include mainly legally-risky packages, for example many multimedia formats which are patent protected or some freeware commercial programs like the Adobe Acrobat Reader or Sun's Java Runtime Enviroment/Development Kit which are protected by a strict EULA.

As of June 2005, we are also an official Ubuntu project, so we are acknowledged by the developers.

Stability

The new official backports currently do not receive testing (unlike the old unofficial backports). The stability of the packages should be the same as that of the Ubuntu unstable distribution (currently Feisty Fawn). If you have problems with one package please report it in the [https://launchpad.net/products/dapper-backports/+filebug Ubuntu community bugtracker] and not the official Bugtracker.

How to use

First make sure you have the Updates and Security [https://help.ubuntu.com/community/Repositories repositories] enabled, as some packages from Backports rely on them.

Installing a single package

A list of packages in Backports can be found at [http://packages.ubuntu.com/ the Ubuntu packages site] ([http://packages.ubuntu.com/dapper-backports/ Dapper] and [http://packages.ubuntu.com/edgy-backports Edgy] backports).

Packages can be downloaded using your browser (choose the correct link for your system under the "Architecture" column)

Right-clicking on a downloaded package will offer an option to install the package. Downloaded packages can also be installed from a shell by typing

sudo dpkg -i ~/Desktop/<filename>.deb

(assuming the package was downloaded to the desktop).

After installing a package, it is advised to run

sudo apt-get -f update

in order to resolve any pending dependency issues.

Enabling the entire repository

Command Line Interface

Just add the following lines to your /etc/apt/sources.list :

For Breezy Badger 5.10:BR deb http://archive.ubuntu.com/ubuntu breezy-backports main universe multiverse restricted

For Dapper Drake 6.06:BR deb http://archive.ubuntu.com/ubuntu dapper-backports main universe multiverse restricted

For Edgy Eft 6.10:BR deb http://archive.ubuntu.com/ubuntu edgy-backports main universe multiverse restricted

Now issue the command: sudo apt-get update

Through Synaptic Package Manager

Using the directions on the [https://wiki.ubuntu.com/AddingRepositoriesHowto How To Add Repositories Page]; and the following information for each section:

For Breezy Badger 5.10: {{{url: http://archive.ubuntu.com/ubuntu distribution: breezy-backports sections: main universe multiverse restricted }}}

For Dapper Drake 6.06: {{{url: http://archive.ubuntu.com/ubuntu distribution: dapper-backports sections: main universe multiverse restricted }}}

For Edgy Eft 6.10: {{{url: http://archive.ubuntu.com/ubuntu distribution: edgy-backports sections: main universe multiverse restricted }}}

How to request new packages

When you need a package backported which isn't currently available, create a new bug report in the Dapper Backports Product of Launchpad using this link [https://launchpad.net/products/dapper-backports/+filebug]. Choose a good summary that will quickly indicate what's need (e.g. "Please backport Bittornado"). Indicate the current Dapper version of the package and version being requested. If you've checked, indicate if the requested version has entered Edgy to make our lives easier!

These are the rules we try to follow when backporting packages:

1. Only packages currently in Ubuntu's development branches are eligible for backporting
2. Backports of large, interdepending application stacks are bad!
3. New versions can be backported, when they're already compatible with OS and system-relevant libraries.
4. No new libraries which will "break" or affect other applications (e.g. libvorbis, libz, etc.) unless the update fixes an exploit.
5. No changes to language interpreters (python, mono). These could affect existing packages in unexpected ways.
6. Applications to be backported must have meaningful bug/security fixes or features.

How to Help

TODO

Useful Links

• [http://backports.ubuntuforums.org/ Backports Homepage]

• [http://ubuntuforums.org/forumdisplay.php?f=47 Backports Forum]

• [http://lists.ubuntu.com/mailman/listinfo/ubuntu-backports Backports Mailing List]

• [http://ubuntuforums.org/showthread.php?t=153402 Forum post about creating a new backport request]

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