Create a Local Yum Repo in RHEL/Centos

create a local repo  in RHEL /Centos

#cd /etc/yum.repos.d
#ll
remove all file in this folder
#vim base.repo
(insert)
[base]
name=redhat
baseurl=http://content.example.com/rhel7.0/x86_64/dvd/ (location of Centos /RHEl ISO image )
enabled=1
gpgcheck=0
:wq
#yum clean all