umount /dev/sr0
mkdir /media/cdrom
mount /dev/cdrom /media/cdrom/
cd /etc/yum.mepos.d/
mkdir snipelinux
mv .r sniplinux
cp snipelinux/M ./
sed -i ‘20 s/0/1/‘ CentOS-Media.repo
yum -y clean all
yum makecache
脚本构建本地yum
原文：http://blog.51cto.com/13459792/2072084
