轉自:http://www.cnblogs.com/lightnear/archive/2012/10/03/2710952.html
[1] 首先備份/etc/yum.repos.d/CentOS-Base.repo
cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak
[2] 進入yum源配置文件所在文件夾
[root@localhost yum.repos.d]# cd /etc/yum.repos.d/
[3] 下載163的yum源配置文件,放入/etc/yum.repos.d/(操作前請做好相應備份)
[root@localhost yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
[4] 重命名文件
[root@localhost yum.repos.d]#mv CentOS6-Base-163.repo CentOS-Base.repo
[5] 運行yum makecache生成緩存
[root@localhost yum.repos.d]# yum makecache
[6] 更新系統(可選)
[root@localhost yum.repos.d]# yum -y update
[7] 安裝vim編輯器(可選)
[root@localhost ~]# yum -y install vim*