From Univention Wiki
Packages including Joomla! 2.5 are available from the Cool Solutions Repository.
After enabling the Cool Solutions Repository you can install Joomla 2.5:
This installs Joomla! 2.5 and all needed dependencies.
First you need to setup mysql where you need to create the user account and database. To do so, you need the root user's password which you can find in the following file:
Use the following commands to create a database called joomla:
mysqladmin -u root -p create joomla mysql -u root -p GRANT ALL PRIVILEGES ON joomla.* TO joomlauser@localhost IDENTIFIED BY '<new joomla database password>';
To configure Joomla! 2.5 open
in your favorite web browser.
Afterwards Joomla! is available at