[root@bass yum.repos.d]# pwd /etc/yum.repos.d [root@bass yum.repos.d]# ls CentOS-Base.repo CentOS-fasttrack.repo CentOS-Vault.repo CentOS-Debuginfo.repo CentOS-Media.repo [root@bass yum.repos.d]# mv CentOS-Base.repo CentOS-Base.repo.bk [root@bass yum.repos.d]# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo --2016-07-21 09:30:33-- http://mirrors.163.com/.help/CentOS6-Base-163.repo Resolving mirrors.163.com... 123.58.173.186, 123.58.173.185 Connecting to mirrors.163.com|123.58.173.186|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 2006 (2.0K) [application/octet-stream] Saving to: “CentOS6-Base-163.repo” 100%[======================================>] 2,006 --.-K/s in 0s 2016-07-21 09:30:34 (196 MB/s) - “CentOS6-Base-163.repo” saved [2006/2006] 更新玩yum源后，执行下边命令更新yum配置，使操作立即生效 [root@bass yum.repos.d]# yum makecache