update-manager - graphical management of software packages updates

       * eventually reinstall the package ubuntu-desktop

       * switch to an updated sources.list entries

       * adds the default user to new groups if needed

       update-manager was developed by Michael Vogt <mvo@ubuntu.com>  with  various  contributors  (see  AUTHORS
       file)

       This manual page was originally written by Bruno Mangin and Michael Vogt <mvo@ubuntu.com>.

       Copyright  (C)  2006-2007 Canonical

       There  is  NO  warranty.  You may redistribute this software under the terms of  the  GNU General  Public
       License.  For more information about these matters, see the files named COPYING.

                                                 April 15, 2010                                UPDATE-MANAGER(8)

       Update-manager is a frontend for the apt package management system. It allows you to perform some actions
       of the command line tool apt-get in a graphical environment.

       Update-manager  is especially designed for upgrading your system, or migrating your system towards a more
       recent version.

       update-manager - graphical management of software packages updates

       For a daily use, you may launch update-manager with no options so that your system is just upgraded.

       For migration purposes, update-manager accepts some options:

       -h, --help
              Show a similar help message

       -V, --version
              Show version

       --data-dir=DATA_DIR
              Directory that contains the data files

       -c, --check-dist-upgrades
              Check if a new distribution release is available

       -d, --devel-release
              If using the latest supported release, upgrade to the development release

       -p, --proposed
              Upgrade using the latest proposed version of the release upgrader

       --no-focus-on-map
              Do not focus on map when starting

Synaptic, sources.list, aptitude

update-manager [options]