It is a very known fact that we can install packages in Linux by using RPM (Red Hat Package Management). Along with all the advantages using RPM, there is one big disadvantage by using RPM that we can’t install packages which depend on other packages i.e dependencies. so in order to install packages which depend on other packages, we have to install packages by using YUM (Yellowdog Updater Modified). Actually YUM is added from RHEL5 onwards. YUM uses a repository for installation. YUM automatically computes dependencies and figure out what things should occur to install packages. YUM can install, remove upgrade or query the packages efficiently.
Now we can go ahead to create repository. Please follow these tips to add a local repository in your hard drive, here I am showing how to create repository in RHEL6.
Step 1: Create any folder i.e Directory
# mkdir /var/ftp/pub
Step 2: Move all RHEL DVD files to this directory /var/ftp/pub
# cd /var/ftp/pub
Step 3: Append the file localRepo:
# cd /etc/yum.repos.d
# vi localRepo.repo
:wq! (Save and Quit)
Step 4: Create repository
#createrepo -g /var/ftp/pub/repodata/repomd.xml /var/ftp/pub/Packages
# yum clean all
# yum list installed
Now the repository has been created in your system.