1灰羽、下載repo源:
1驮履、cd /etc/yum.repos.d/ && cp CentOS-Base.repo CentOS-Base.repo.$(date +%F)
2鱼辙、wget -SO /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo
2廉嚼、更改發(fā)行版本及CPU體系架構(gòu)參數(shù)值($releasever與$basearch)
sed -i.$(date +%F)'s#/$releasever#/6#g;s#/$basearch#/x86_64#g'CentOS-Base.repo
3、清空并新生成yum緩存
1倒戏、yum clean all
2怠噪、yum update
3、yum makecache