管理软件仓库
可以免费安装在Kubuntu上的软件有成千上万个。这些软件都存放在软件仓库(repositories)中以便通过网络安装。这样使得在Linux下安装新软件非常容易，而且也非常安全，因为在安装前，每个程序都专门为Kubuntu编译和检查过。为了便于管理这些软件，Kubuntu软件仓库被分为4个部分：Main，Restricted，Universe和Multiverse。
软件分类原则基于以下两个因素
The level of support software development teams provide for a program
The level of compliance the program has to the Free Software Philosophy
You can find more information about the Repositories available on the Ubuntu website.
The standard Kubuntu Install CD contains some software from the Main and Restricted categories. Once your system is made aware of the Internet-based locations for these repositories, many more programs are made available for installation. Using the software package management tools already installed on your system, you can search for, install and update any piece of software directly over the Internet, without the need for the CD.
The Kubuntu Install CD-ROM is included in the repositories after installation. This can cause Adept to ask for the CD-ROM when installing packages. It is possible to disable this repository so that Adept relies solely on the internet repositories.
禁用CD-ROM仓库：
想运行Adept程序，请选择->->
在Adept软件包管理窗口中选择->。
Find the repository line that starts with "cdrom:", click the line, and select .
Click Apply to save your changes, and then exit using Close.
启用额外的软件仓库
想运行Adept程序，请选择->->
在Adept软件包管理窗口中选择->。
To enable the Universe repository, find the repository line with the Universe Component, and click the line and select .
Adding this repository will mean that the majority of the Free Software universe will be available to install on your system. This software is supported by a carefully selected group of volunteers within the Kubuntu Community, but is not supported by the core Kubuntu development team and may not include security updates.
To enable the Multiverse repository, find the repository lines (two of them) with the Universe Component, and click the word "universe". Edit the entry so that it reads "universe multiverse". click the line and select to enable it if it is not already enabled.
增加non-free软件仓库以为着你将能够安装non-free类的软件。但此类软件可能会有法律许可方面的问题。你应该核实你所在地的法律允许你使用这些软件。强调一下，这些软件不会有安全更新！
Click Apply to save your changes, and then exit using Close.
