安装环境是：如下
[root@Charley ~]# cat /etc/redhat-release ========》查看的是版本
CentOS release 6.6 (Final)
[root@Charley ~]# uname -r ========》内核
2.6.32-504.el6.x86_64
[root@Charley ~]#
1、备份（必须要备份）
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup ===执行此命令
2、下载安装源
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo ===执行到命令行
[root@Charley ~]
--2015-06-08 10:27:56-- http://mirrors.aliyun.com/repo/Centos-6.repo
mirrors.aliyun.com... 112.124.140.210, 115.28.122.210
mirrors.aliyun.com|112.124.140.210|:80...
TTP ... 200 OK
72 (2.5K) [application/octet-stream]
tc/yum.repos.d/CentOS-Base.repo
100%[=============================================================================================================================>] 2,572 --.-K/s in 0s
2015-06-08 10:27:58 (272 MB/s) - c/yum.repos.d/CentOS-Base.repo2572/2572])
此处图显示的是下载安装好之后的结果。
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