如何重新配置RHEL的yum源

问题如下：#yum install
pam-devel#This system
is not registered to Red Hat Subscription Management. You can use
subscription-manager to register.Setting up
Install ProcessNothing to do如下图：

提示系统没有在redhat上注册。如果使用redhat的yum源需注册付费，费时费力，因此试图寻找一种不需要注册可以使用的方法，需要重新配置yum源。下面是结合网上的相关资料，搜索的比较可行的解决办法，重新配置yum源。相关资料参考：http://www.th7.cn/system/lin/201402/50472.shtml?WebShieldDRSessionVerify=YRZRMD7cuYnRVnCdm6Me实验操作系统：RedHat
Enterprise Linux 6.4-x86_64 md5:467B53791903F9A0C477CBB1B24FFD1F 下载地址：http://pan.baidu.com/s/1bniVAMj第一步下载相关安装包可以通过http://mirrors.163.com/centos下载，也可以参考下载好的网盘链接：http://pan.baidu.com/s/1qW0MbgC第二步卸载Redhat自带的yum#rpm -qa |
grep yum | xargs rpm -e --nodeps第三步安装下载的安装包#rpm -ivh
python-iniparse-0.3.1-2.1.el6.noarch.rpm#rpm -ivh
yum-metadata-parser-1.1.2-16.el6.x86_64.rpm#rpm -ivh yum-3.2.29-40.el6.centos.noarch.rpm
yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm第四步到http://mirrors.163.com的
centos帮助文档 中下载CentOS6-Base-163.repo文件，存放到/etc/yum.repo.d中#wget http://mirrors.163.com/.help/CentOS6-Base-163.repo第五步将Centos6-Base-163.repo中的$releasever改为Centos的版本号即可为了防止错误，也可使用我已修改好的文件http://pan.baidu.com/s/1o6AZ23o文件修改成如下即可：#
CentOS-Base.repo## The mirror
system uses the connecting IP address of the client and the# update
status of each mirror to pick mirrors that are updated to and#
geographically close to the client. You should use this for CentOS updates# unless you
are manually picking other mirrors.## If the
mirrorlist= does not work for you, as a fall back you can try the# remarked out
baseurl= line instead.##[base]name=CentOS-6
- Base - 163.combaseurl=http://mirrors.163.com/centos/6/os/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=osgpgcheck=1gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #released
updates[updates]name=CentOS-6
- Updates - 163.combaseurl=http://mirrors.163.com/centos/6/updates/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=updatesgpgcheck=1gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6 #additional
packages that may be useful[extras]name=CentOS-6
- Extras - 163.combaseurl=http://mirrors.163.com/centos/6/extras/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=extrasgpgcheck=1gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6#additional
packages that extend functionality of existing packages[centosplus]name=CentOS-6
- Plus - 163.combaseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=centosplusgpgcheck=1enabled=0gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6#contrib -
packages by Centos Users[contrib]name=CentOS-6
- Contrib - 163.combaseurl=http://mirrors.163.com/centos/6/contrib/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=6&arch=$basearch&repo=contribgpgcheck=1enabled=0gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6第六步 yum clean
all 清除原有缓存第七步
yum makecache 获取yum列表等待，大约三分钟后出现下面提示，表示yum更改完成：Metadata Cache
Created