1.安装eple

下载地址：https://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm

2.安装nux-dextop下载地址：http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm3.执行yum update

centos7安装VLC播放器