1，查看原有yum包
# rpm -qa|grep yum
2，卸載yum包
# rpm -qa|grep yum|xargs rpm -e --nodeps
3.下載163yum包
https://mirrors.aliyun.com/centos/6.10/os/x86_64/Packages/
在里面找到下面4個(gè)文件剑按，
python-iniparse-0.3.1-2.1.el6.noarch.rpm
yum-3.2.29-81.el6.centos.noarch.rpm
yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
yum-plugin-fastestmirror-1.1.30-41.el6.noarch.rpm
4.安裝軟件包
# rpm -ivh yum-* --nodeps
# rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
5.移走repo
# cd /etc/yum.repos.d/
# mv r* /opt
6，下載163源
# wget http://mirrors.163.com/.help/CentOS6-Base-163.repo
7.修改文件中的 $releasever 全部修改為目標(biāo)版本6#為防止出錯(cuò)障涯，$basearch全部替換成x86_64
:%s@$releasever@6@g
:%s@$basearch@x86_64@g
8纵朋，更新一下yum和加載緩存
# yum clean all &&yum makecache
9.測(cè)試是否正常。
# yum -y install lrzsz vim?
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