If there is no such line in /etc/yum.conf, then yum infers the correct value by deriving the version number from the redhat-releaseproduct package that provides the redhat-release file. Yum obtains the value of $releasever from the distroverpkg=value line in the /etc/yum.conf configuration file. This variable references the release version of Red Hat Enterprise Linux. Yum supports a series of built-in variables, which can be used in all its configuration files, including repository definitions: To install a new repository, see Adding a Repository Definition below. To query the content of a specific repository, use yum repository-packages. More information about configured repository can be obtained with yum repolist.

repo file extension in this directory are read by yum. Yum looks into local repository definitions, which are. Yum Repositories Configuring Yum and Yum Repositories More details are found in the Yum Repositories section Yum looks for local repository definitions. The configuration file contains, among other things, the location of the log file (by default /var/log/yum.log). It can also perform installation of new packages, removal of old packages and perform queries on the installed and/or available packages among many other commands/services. It can automatically perform system updates, including dependency analysis and obsolete processing based on repository metadata. Yum is an interactive, rpm-based package manager.

Yum localinstall