Centos Linux Os CentOS-配置YUM源加速(阿里云) 备份本地源 1 mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup 配置CentOS7(aliyun) yum源 1 wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo 把$releasever替换为7 1 sed -i 's/$releasever/7/g' /etc/yum.repos.d/CentOS-Base.repo