One of the most interesting innovations that come with the new Ubuntu 9.10 Karmic Koala is the integration of the Launchpad PPA repositories. This happens to include a new command to the terminal. This command adds the new application repositories Launchpad and search and download the PGP key needed to authenticate the packages to install. This command simplifies adding applications and security is the tool that works behind the Ubuntu Software Center, one of the most important developments of the new Karmic.

For example, we will install Gwibber, a Twitter client for Gnome in our Ubuntu 9.10. Repositories to include in our sources.list for the stable release of this program are:

deb http://ppa.launchpad.net/gwibber-team/ubuntu intrepid main

In this line, from now all we need to know the path where the project staying repositories, in this case Gwibber-team and with this we construct the following command:

sudo add-apt-repository ppa:gwibber-team

When run on a single terminal handles the download and install the PGP key and add a new file in our sources.list.d with repositories where the packages will download the application.

If add-apt-repository successfully completed we can install the Gwibber as we would ever. We update the repositories and install with:

sudo aptitude update && sudo aptitude install gwibber

Easy right?

Gwibber will be installed under Applications -> Internet -> microblogging client Gwibber.

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