Windows需要经常清理系统才能保持捷步如飞，Ubuntu也一样需要清理系统。 平素用sudo apt-get autoclean和 sudo
apt-get autoremove来清理，今天在新立得软件包管理器发现一个gtkorphan，看介绍是这么说的： A graphical tool to find and remove orphaned libraries GtkOrphan is a graphical tool which scans your debian system, looking for orphaned libraries. It implements a GUI front-end to deborphan, but adds the package removal capability. A detailed documentation on the program can be found at:
