How to uninstall citadel-server from Ubuntu

Uninstall citadel-server

To uninstall just citadel-server package itself from Ubuntu execute on terminal:

sudo apt-get remove citadel-server

Uninstall citadel-server and it's dependent packages

To uninstall the citadel-server package and any other dependant package which are no longer needed on Ubuntu.

sudo apt-get autoremove citadel-server

Purging citadel-server

If you also want to delete configuration and/or data files of citadel-server from Ubuntu then this will work:

sudo apt-get purge citadel-server

To delete configuration and/or data files of citadel-server and it's dependencies from Ubuntu then execute:

sudo apt-get autoremove --purge citadel-server

citadel-server package information

name citadel-server
section mail
description

complete and feature-rich groupware server

website www.citadel.org/ 
maintainer ubuntu-devel-discuss@lists.ubuntu.com

More information about apt-get remove

Advanced Package Tool, or APT, is a free software user interface that works with core libraries to handle the installation and removal of software on Debian, Ubuntu and other Linux distributions. APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages, either from precompiled files or by compiling source code.

apt-get is the command-line tool for handling packages, and may be considered the user's "back-end" to other tools using the APT library.

apt-get remove is identical to install except that packages are removed instead of installed. Note that removing a package leaves its configuration files on the system. If a plus sign is appended to the package name (with no intervening space), the identified package will be installed instead of removed.

See Also

How to install citadel-server package on Ubuntu