查看、卸载已安装的yum包
查看已安装的yum包
[root@iZ23rter8cjZ ~]# rpm -qa|grep yum
yum-Metadata-parser-1.1.2-16.el6.x86_64
yum-plugin-fastestmirror-1.1.30-17.el6_5.noarch
yum-plugin-security-1.1.30-17.el6_5.noarch
yum-3.2.29-43.el6.centos.noarch
yum-utils-1.1.30-17.el6_5.noarch
卸载软件包
[root@iZ23rter8cjZ ~]# rpm -qa|grep yum|xargs rpm -e
下载安装yum包
下载地址
http://centos.ustc.edu.cn/centos/6.5/os/x86_64/Packages/
http://mirrors.163.com/centos/6/os/x86_64/Packages/
找到对应包如：
http://mirrors.163.com/centos/6/os/x86_64/Packages/
yum-3.2.29-73.el6.centos.noarch.rpm
yum-Metadata-parser-1.1.2-16.el6.x86_64.rpmyum-plugin-fastestmirror-1.1.30-37.el6.noarch.rpm
安装yum包：
[root@iZ23rter8cjZ ~]# rpm -ivh yum-*
error: Failed dependencies:
python-urlgrabber >= 3.9.1-10 is needed by yum-3.2.29-73.el6.centos.noarch
发现错误，python-urlgrabber版本必须大于等于3.9.1-10
查看系统的python信息
[root@iZ23rter8cjZ ~]# rpm -qa|grep python
python-libs-2.6.6-52.el6.x86_64
libproxy-python-0.3.0-4.el6_3.x86_64
newt-python-0.52.11-3.el6.x86_64
python-ethtool-0.6-5.el6.x86_64
python-urlgrabber-3.9.1-9.el6.noarch
python-iniparse-0.3.1-2.1.el6.noarch
abrt-addon-python-2.0.8-21.el6.centos.x86_64
python-setuptools-0.6.10-3.el6.noarch
python-iwlib-0.1-1.2.el6.x86_64
python-pycurl-7.19.0-8.el6.x86_64
python-2.6.6-52.el6.x86_64
libxml2-python-2.7.6-14.el6_5.2.x86_64
dbus-python-0.83.0-6.1.el6.x86_64
libreport-python-2.0.9-19.el6.centos.x86_64
python-pip-7.1.0-1.el6.noarch
rpm-python-4.8.0-37.el6.x86_64
发现python-urlgrabber-3.9.1-9.el6.noarch 版本低于3.9.1-10
卸载：python-urlgrabber-3.9.1-9.el6.noarch
rpm -e python-urlgrabber-3.9.1-9.el6.noarch
下载：wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm
安装：rpm -ivh python-urlgrabber-3.9.1-11.el6.noarch.rpm
安装yum
[root@iZ23rter8cjZ ~]# rpm -ivh yum-*
更改yum源
下载配置文件
http://mirrors.163.com/.help/CentOS6-Base-163.repo
编辑配置文件
#cd /etc/yum.repos.d
#vim CentOS-Base.repo
vim替换命令
：%s/$releasever/6/g
退出保存
清理yum缓存
#yum clean all
将服务器软件包信息缓存至本地，提高搜索安装效率
#yum makecache
测试
#yum seach vim
原文链接：/centos/381799.html