about virtual machine technology
Centos yum source: 1,进入yum源配置目录 cd /etc/yum.repos.d 2,备份系统自带的yum源 mv CentOS-Base.repo CentOS-Base.repo.bk 下载163网易的yum源: wget http://mirrors.163.com/.help/CentOS6-Base-163.repo 3,更新玩yum源后,执行下边命令更新yum配置,使操作立即生效 yum makecache