CentOS6更换yum源

1.首先备份原来的cent os官方yum源

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

2.获取阿里的yum源覆盖本地官方yum源

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

3.清理yum缓存,并生成新的缓存

yum clean all
yum makecache

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