How to uninstall libcegui-mk2-1-dbg from Ubuntu
To uninstall just libcegui-mk2-1-dbg package itself from Ubuntu execute on terminal:
sudo apt-get remove libcegui-mk2-1-dbg
Uninstall libcegui-mk2-1-dbg and it's dependent packages
To uninstall the libcegui-mk2-1-dbg package and any other dependant package which are no longer needed on Ubuntu.
sudo apt-get autoremove libcegui-mk2-1-dbg
If you also want to delete configuration and/or data files of libcegui-mk2-1-dbg from Ubuntu then this will work:
sudo apt-get purge libcegui-mk2-1-dbg
To delete configuration and/or data files of libcegui-mk2-1-dbg and it's dependencies from Ubuntu then execute:
sudo apt-get autoremove --purge libcegui-mk2-1-dbg
libcegui-mk2-1-dbg package information
Crazy Eddie's GUI (debugging libraries)
CEGUI is a free library providing windowing and widgets for graphics APIs and engines where such functionality is not natively available or is severely lacking. The library is written in C++, is object oriented, and is primarily targeted at games developers who should be spending their time creating great games, not building GUI sub-systems This version of CEGUI natively supports the OpenGL rendering target and provides debugging libraries for it.
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.