svn(subversion)是近年来崛起的版本管理工具，是cvs的接班人。目前，绝大多数开源软件都使用svn作为代码版本管理软件。-svn (subversion) version of the rise in recent years, management tools, is the successor to cvs. At present, the vast majority of open source software code using svn as version manage