切换 yum 源
最后更新于：2022-04-02 03:54:19
[TOC]
## CentOS7
```
yum install wget -y \
&& cd /etc/yum.repos.d/ \
&& mkdir repo_bak \
&& mv *.repo repo_bak/ \
&& wget http://mirrors.aliyun.com/repo/Centos-7.repo \
&& wget http://mirrors.163.com/.help/CentOS7-Base-163.repo \
&& yum clean all \
&& yum makecache \
&& yum install -y epel-release \
&& wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo \
&& yum clean all \
&& yum makecache
```
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