水月笔记

这是本文档旧的修订版！

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更换yum源：

备份原配置

cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

阿里云：

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

清华大学：

wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.tuna.tsinghua.edu.cn/repo/Centos-7.repo

网易：

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.163.com/.help/CentOS7-Base-163.repo

中科大：

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.ustc.edu.cn/centos/7/os/x86_64/

清理缓存：

yum clean all

yum makecache

安装wget

yum -y install wget curl -O http://mirrors.aliyun.com/repo/Centos-7.repo