linux:centOs7换源阿里云

备份:get

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup下载

下载:yum

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

而后执行备份

yum clean all wget

yum makecacheco

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