导读 本文档将教会大家快速配置yum源，这种方法很适合新创建的Linux系统，特别是RHEL7系列的Linux系统。
首先把系统镜像挂载过来：

在右下角的光盘标志这里右键，然后点击连接，桌面就会出现镜像图标。
然后再执行创建的创建。

vim rhel7.repo.sh
#在打开的文件中添加以下内容：
#!/bin/bash

cd /etc/yum.repos.d

cat > rhel7.repo <<OK
[rhel7] 
name=rhel7
baseurl=file:///media/cdrom
enabled=1
gpgcheck=0
OK

mkdir -p /media/cdrom
mount /dev/cdrom /media/cdrom
echo "/dev/cdrom /media/cdrom iso9660 defaults 0 0" >> /etc/fstab

yum clean all
yum makecache
写完脚本后记得赋予脚本执行权限：
chmod 755 rhel7.repo.sh或者chmod +x rhel7.repo.sh
赋予脚本执行权限后再运行脚本：
bash rhel7.repo.sh 或者./rhel7.repo.sh
测试：
[root@localhost Desktop]# yum install -y httpd
Loaded plugins: langpacks, product-id, search-disabled-repos, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Resolving Dependencies
--> Running transaction check
---> Package httpd.x86_64 0:2.4.6-40.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

============================================================================================================
 Package                Arch                    Version                        Repository              Size
============================================================================================================
Installing:
 httpd                  x86_64                  2.4.6-40.el7                   rhel7                  1.2 M

Transaction Summary
============================================================================================================
Install  1 Package

Total download size: 1.2 M
Installed size: 3.7 M
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : httpd-2.4.6-40.el7.x86_64                                                                1/1 
  Verifying  : httpd-2.4.6-40.el7.x86_64                                                                1/1 

Installed:
  httpd.x86_64 0:2.4.6-40.el7                                                                               

Complete!
总结

最后出现Complete!说明httpd安装成功，同时也说明了yum仓库配置成功！
注：我用的系统是RedHat7，用其他Linux系统的话只需要改yum仓库名称即可。

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