轉自： http://linux.chinaunix.net/techdoc/system/2009/08/31/1133198.shtml
1.1 安裝KDE桌面環境
yum groupinstall "KDE (K Desktop Environment)"
1.2 卸載KDE桌面環境
yum groupremove "KDE (K Desktop Environment)"
2.1 安裝GNOME桌面環境
yum groupinstall "GNOME Desktop Environment"
2.2 卸載GNOME桌面環境
yum groupremove "GNOME Desktop Environment"
另一種方法：
yum groupinstall kde-desktop
yum --enablerepo=kde-testing groupupdate kde-desktop
yum update