UCS 2.4 - Univention

11 Software maintenance
the univention-updater command is executed at a certain time. The package update is performed
after the release update.
The outputs of univention-updater during the automated release update are written to
/var/log/univention/updater.log on the updated systems.
11.3.6 Manual package maintenance
All package maintenance processes can either be performed with the Univention Management Console
package management (see Chapter 5.3.11) or using command line-based tools. The conventional Debian
tools are used.
Further information can be found in [17].
11.3.6.1 Installing packages
Individual packages are installed using the command
univention-install PACKAGENAME
The repository server is used as the installation medium. When installing a package it is sometimes
necessary to install additional packages, which are required for the proper functioning of the package.
These are called packages dependencies. The installation can be simulated with the parameter -s to
check in advance which dependencies are retrieved.
Each system receives a local list of available packages. Before the installation of a package, the repository
server’s package list should be updated to ensure that the up-to-date version is used and all dependencies
are resolved:
apt-get update
11.3.6.2 Searching for available packages
If the name of a package is known, the command apt-cache search can be used to search for the
package. Parts of the name or words which appear in the description of the package are listed.
apt-cache search fax
The package list must also be updated here to ensure that search is performed in the up-to-date package
vault (see 11.3.6.1).
11.3.6.3 Removing packages
Individual packages are removed with the command
apt-get remove PACKAGENAME
Packages required by the package removed are also removed in turn.
This procedure can be simulated using the -s parameter.
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