2.1 About Yum

Oracle Linux provides the yum utility which you can use to install or upgrade RPM packages. The main benefit of using yum is that it also installs or upgrades any package dependencies. yum downloads the packages from repositories such as those that are available on the Unbreakable Linux Network (ULN) or the Oracle public yum server, but you can also set up your own repositories for use by systems that do not have Internet access.

If you have registered your system with ULN, you can use yum with ULN channels to maintain the software on your system, as described in Chapter 1, The Unbreakable Linux Network.