RedHat Enterprise Linux 6.0（32位）如何使用CentOS YUM...
由於 redhat的yum在線更新是收費的，如果沒有注冊的話不能使用，如果要使用，需將redhat的yum卸載後，重啟安裝，再配置其他源，以下為詳細過程：
1、刪除redhat原有的yum
rpm -aq|grep yum|xargs rpm -e --nodeps
2、下載yum安裝文件
wget http://tel.mirrors.163.com/centos/6.4/os/i386/Packages/yum-3.2.29-40.el6.centos.noarch.rpm
wget http://tel.mirrors.163.com/centos/6.4/os/i386/Packages/yum-metadata-parser-1.1.2-16.el6.i686.rpm
wget http://tel.mirrors.163.com/centos/6.4/os/i386/Packages/yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
wget http://tel.mirrors.163.com/centos/6.4/os/i386/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
3、進行安裝yum
rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh yum-metadata-parser-1.1.2-16.el6.i686.rpm
rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
注意最後兩個包必需同時安裝，否則會相互依賴.
4、更新repo文件
mv /etc/yum.repos.d/rhel-debuginfo.repo /etc/yum.repos.d/rhel-debuginfo.repo.repo.bak
vi /etc/yum.repos.d/rhel-debuginfo.repo
內容為：
[base]
name=CentOS-$releasever - Base
baseurl=http://mirrors.163.com/centos/6.4/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://mirrors.163.com/centos/6.4/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#packages used/produced in the build but not released
#[addons]
#name=CentOS-$releasever - Addons
#baseurl=http://mirrors.163.com/centos/$releasever/addons/$basearch/
#gpgcheck=1
#gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://mirrors.163.com/centos/6.4/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://mirrors.163.com/centos/6.4/centosplus/$basearch/
gpgcheck=1
enabled=0
5、yum clean all
6、yum update
7、yum install vim #測試一下可不可以用
【設置本地鏡像作為yum源】
1、mkdir /mnt/cdrom
2 mount /dev/cdrom /mnt #掛著鏡像，光盤
3 vi /etc/yum.repos.d/rhel-debuginfo.repo #編輯repo文件
添加一下內容：
[rhel_6_iso]
name=local iso
baseurl=file:///mnt
gpgcheck=1
gpgkey=file:///mnt/RPM-GPG-KEY-redhat-release
