1.安装之前要检查系统是否已安装了CVS，cvs-version，如果没有出现版本信息，则要安装；如果出现以下信息
Concurrent Versions System (CVS) 1.11.23 (client/server)
Copyright (C) 2006 Free Software Foundation, Inc.
Senior active maintainers include Larry Jones, Derek R. Price,
and Mark D. Baushke. Please see the AUTHORS and README files from the CVS
distribution kit for a complete list of contributors and copyrights.
CVS may be copied only under the terms of the GNU General Public License,
a copy of which can be found with the CVS distribution kit.
Specify the --help option for further information about CVS
表示已安装成功
2.安装yum install cvs
3.which cvs，显示安装的路径信息