CentOS7快速更改yum源

yum install wget -y
rm -rf /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo
OR
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/vincent-liang/p/7043099.html