# rpm -aq|grep yum|xargs rpm -e --nodeps
二.从CentOS系统镜像中提取rpm包,这里以centos6.3_x64为例
这里从镜像包Packages目录下提取如下rpm包:
下载这些软件包的地址：
http://download.csdn.net/download/primeprime/10231431
三.安装rpm包
注:这里我为了方便就将所有提取出来的包放到我的VPS上供大家下载
# wgethttp://www.showerlee.com/down/python-iniparse-0.3.1-2.1.el6.noarch.rpm
# rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
# wgethttp://www.showerlee.com/down/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
# rpm -ivh yum-Metadata-parser-1.1.2-16.el6.x86_64.rpm
# wgethttp://www.showerlee.com/down/yum-3.2.29-30.el6.centos.noarch.rpm
# wgethttp://www.showerlee.com/down/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
# rpm -ivh yum-3.2.29-30.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
注：这一步要两个一起安装，要不会会出现如下错误：
----------------------------------------------
# rpm -ivh yum-3.2.29-30.el6.centos.noarch.rpm
warning: yum-3.2.29-30.el6.centos.noarch.rpm: Header V3 DSA signature: NOKEY,key ID e8562897
error: Failed dependencies:
yum-fastestmirror is needed by yum-3.2.29-30.el6.centos.noarch
# rpm -ivh yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
warning: yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm: Header V3 DSA signature: NOKEY,0);">yum >= 3.0 is needed by yum-plugin-fastestmirror-1.1.30-14.el6.noarch
-----------------------------------------------
# wgethttp://www.showerlee.com/down/PackageKit-yum-0.5.8-20.el6.x86_64.rpm
# rpm -ivh PackageKit-yum-0.5.8-20.el6.x86_64.rpm
# wgethttp://www.showerlee.com/down/PackageKit-yum-plugin-0.5.8-20.el6.x86_64.rpm
# rpm -ivh PackageKit-yum-plugin-0.5.8-20.el6.x86_64.rpm
四.下载配置源：
# cd /etc/yum.repos.d/
# wgethttp://docs.linuxtone.org/soft/lemp/CentOS-Base.repo
五.测试
# yum version
---------------------------------------------
Loaded plugins: fastestmirror,refresh-packagekit
Warning: RPMDB altered outside of yum.
Installed: 6/x86_64 1285:a2a18f0b8c3ca036a361579f6b22014aadfd680e
Group-Installed: yum 14:45bb88c01e2346ba8fe7ac401a053cfd42bda739
version
----------------------------------------------
大功告成.....
