centos7如何配置yum 在 etc yum.repos下有6个.repo文件 怎么配置成（centos7添加yum源详细步骤）

1、上传操作系统镜像CentOS-6.5-x86_64-bin-DVD1.iso到/tmp下2、建立目录并挂载镜像mkdir /mnt/cdrommount -o loop /tmp/CentOS-6.5-x86_64-bin-DVD1.iso /mnt/cdrom/3、设置本地repocat /etc/yum.repos.d/loca-base.repo[local-base]name=loca-basebaseurl=file:///mnt/cdrom gpgcheck=0EOF4、验证YUM源yum repolist