SVN全名Subversion，即版本控制系统。SVN与CVS一样，是一个跨平台的软件，支持大多数常见的操作系统。作为一个开源的版本控制系统,Subversion管理着随时间改变的数据。这些数据放置在一个中央资料档案库(repository)中。这个档案库很像一个普通的文件服务器,不过它会记住每一次文件的变动。这样你就可以把档案恢复到旧的版本,或是浏览文件的变动历史。(SVN full name Subversion, that is, version control system. SVN, like CVS, is a cross platform software that supports most common operating systems. As an open source version control system, Subversion manages data that changes over time. These data are placed in a central data archive (repository). The archive is like an ordinary file server, but it will remember the changes of each file. In this way, you can restore the file to the old version, or browse the changing history of the file.)