首页复制命令即可
Centos7配置如下：
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
测试：
yum install -y net-tools
复制命令即可
Centos7配置如下：
wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all
yum makecache
测试：
yum install -y net-tools
