Red Hat更换Centos6源

RedHat使用自带的yum源是需要注册的，不想注册的可以替换本地源使用

工控机型号： QOTOM 190G4-M

系统： Red Hat Enterprise Linux Server release 6.7 (Santiago) x86_64

Red Hat Enterprise Linux ISO 镜像下载：

https://wanghualang.pipipan.com/dir/13133650-26232498-a8efb3/

软件包下载地址：

x86 地址：http://mirrors.163.com/centos/6/os/i386/Packages/

x86_64 地址：http://mirrors.163.com/centos/6/os/x86_64/Packages/

替换centos6源

1. 卸载yum源

   rpm -qa|grep yum|xargs rpm -e --nodeps

2. 安装yum软件包

   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

3. 更改yum源

   编辑CentOS6-Base-163.repo文件，存放到/etc/yum.repo.d

   [base]
   name=CentOS-6 - Base - 163.com
   baseurl=http://mirrors.163.com/centos/6/os/$basearch/
   #mirrorlist=http://mirrorlist.centos.org/?release=6$releasever&arch=$basearch&repo=os
   gpgcheck=1
   gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
   
   #released updates 
   [updates]
   name=CentOS-6 - Updates - 163.com
   baseurl=http://mirrors.163.com/centos/6/updates/$basearch/
   #mirrorlist=http://mirrorlist.centos.org/?release=6$releasever&arch=$basearch&repo=updates
   gpgcheck=1
   gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
   
   #additional packages that may be useful
   [extras]
   name=CentOS-6 - Extras - 163.com
   baseurl=http://mirrors.163.com/centos/6/extras/$basearch/
   #mirrorlist=http://mirrorlist.centos.org/?release=6$releasever&arch=$basearch&repo=extras
   gpgcheck=1
   gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
   
   #additional packages that extend functionality of existing packages
   [centosplus]
   name=CentOS-6 - Plus - 163.com
   baseurl=http://mirrors.163.com/centos/6/centosplus/$basearch/
   #mirrorlist=http://mirrorlist.centos.org/?release=6$releasever&arch=$basearch&repo=centosplus
   gpgcheck=1
   enabled=0
   gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
   
   #contrib - packages by Centos Users
   [contrib]
   name=CentOS-6 - Contrib - 163.com
   baseurl=http://mirrors.163.com/centos/6/contrib/$basearch/
   #mirrorlist=http://mirrorlist.centos.org/?release=6$releasever&arch=$basearch&repo=contrib
   gpgcheck=1
   enabled=0
   gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6

4. 清除缓存文件及目录

   yum clean all

5. 获取yum列表

   yum makecache

图形界面安装

1. 查看当前系统运行级别

   runlevel

2. 查看桌面环境的组件

   yum grouplist|more

3. 安装GNOME图形界面

   yum groupinstall “X Window System”  -y
   yum groupinstall “Desktop”  -y

安装成功后输入startx，或者init 5, 即可切换到图形界面（临时生效）
修改/etc/inittab文件中的id:3:initdefault将3改为5（永久生效）

卸载图形化界面

利用组卸载命令 yum groupremove + 组包名即可，其中组包名就是我们之前上面安装的。