count Number of duplicate packages to keep on the system (default 2) Leaves Options -all When listing leaf nodes also list leaf nodes that are not libraries. cleandupes Scan for duplicates in the local RPM database and clean out the older versions. dupes Scan for duplicates in the local RPM database. If any problems are found it will exit with an exit code of 1.

problems List dependency problems in the local RPM database. oldkernels Remove old kernel and kernel-devel packages. This is identical to 'yum list extras', which may provide better orphans List installed packages which are not available from currenly configured repositories. Leaf nodes are RPMs that are not relied upon by any other RPM. leaves List leaf nodes in the local RPM database. v, -version Report program version and exit. h, -help Help display a help message and then quit. This option will list both installed and available packages.-c Use alternative config file (default is /etc/yum.conf). Yum list’s packages as well as refine your list with a package specification of any of the package’s name, arch, version, release, epoch. Yum list command lists package(s) in any repository enabled, packages installed, packages available for installation for the system. Yum command has different options for performing different type of package administration, few of the major commands are discussed here. Yum clean, is cache option will help in managing the disk space at regular intervals on the system.

Yum can also be used python programs via its module interface. Yum has a plugin interface for adding simple features. You can also utilize yum to install a group of packages, one of such group is “Development Tools”.

One of the main features, it automatically identifies dependencies and ensures as to what packages needs to be installed to complete requested package installation. It is an automatic updater and package installer/remover for rpm system(s). The purpose of this guide is to know the usage of YUM (Yellowdog updater modified).

Rhel list installed packages