平台：GNU/Linux
版本：ubuntu 11.10
首先关于登陆管理器：
lightdm 是默认安装的，要切换到gdm 或者kdm，在终端中运行：
sudo dpkg-reconfigure gdm
默认的安装gnome-shell后，缺少很多有用的管理工具。
下面是安装GNOME3的方法：
sudo apt-get install gnome-shell gnome-themes-standard gnome-tweak-tool
要想完全的移除某个安装包可以执行
sudo apt-get --auto-remove purge [packages]
或者是
sudo apt-get autoremove [packages]
$ sudo apt-get --auto-remove purge gdm gnome-shell
[sudo] password for dgd:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
gdm* gnome* gnome-core* gnome-shell* gnome-shell-extensions-common*
gnome-shell-extensions-user-theme* gnome-tweak-tool*
0 upgraded, 0 newly installed, 7 to remove and 0 not upgraded.
After this operation, 14.0 MB disk space will be freed.
Do you want to continue [Y/n]? Y
(Reading database ... 246435 files and directories currently installed.)
Removing gnome ...
Removing gnome-core ...
Removing gdm ...
Purging configuration files for gdm ...
Removing user `gdm' ...
Warning: group `gdm' has no more members.
Done.
Removing gnome-shell-extensions-user-theme ...
Removing gnome-shell-extensions-common ...
Removing gnome-tweak-tool ...
Removing gnome-shell ...
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Processing triggers for gconf2 ...
Processing triggers for hicolor-icon-theme ...
Processing triggers for libglib2.0-0:i386 ...
Processing triggers for libglib2.0-0 ...
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for man-db ...
$
本文转自 urey_pp 51CTO博客，原文链接：http://blog.51cto.com/dgd2010/725747，如需转载请自行联系原作者
