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If you do not accumulate small streams, you will not be able to make rivers and seas

CentOS修改各大yum源

备份原配置文件

进入yum源配置目录: cd /etc/yum.repos.d

如果没有先安装wget:
sudo yum install wget

修改yum源,就是修改CentOS-Base.repo的内容,所以我们要先备份一下原来的:
sudo mv CentOS-Base.repo CentOS-Base.repo.backup

下载新配置文件

然后用wget下载国内的yum源(即CentOS-Base.repo文件),新的在哪呢?目前国内主要有三个yum源:

个人比较推荐中科大,不管是centos还是Ubuntu

阿里云

CentOS7

sudo wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

CentOS6

sudo wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS5

sudo wget -O CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

网易

CentOS7

sudo wget -O CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo

CentOS6

sudo wget -O CentOS-Base.repo http://mirrors.163.com/.help/CentOS6-Base-163.repo

CentOS5

sudo wget -O CentOS-Base.repo http://mirrors.163.com/.help/CentOS5-Base-163.repo

中科大

CentOS7

sudo wget -O CentOS-Base.repo https://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=3

CentOS6

sudo wget -O CentOS-Base.repo https://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=2

CentOS5

sudo wget -O CentOS-Base.repo https://lug.ustc.edu.cn/wiki/_export/code/mirrors/help/centos?codeblock=1

更新元数据

先清除原来的元数据缓存

sudo yum clean all

更新新的元数据缓存

sudo yum makecache
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