Per Yum's website (http://linux.duke.edu/projects/yum/) "Yum is an automatic updater and package installer/remover for rpm systems. It automatically computes dependencies and figures out what things should occur to install packages. It makes it easier to maintain groups of machines without having to manually update each one using rpm."

The key features include:
Multiple Repositories
A Simple configuration file
Correct dependency calculation
Fast operation
rpm-consistent behavior
A Simple user interface

You can use yum via the command line to install any application that is on Wiredtree's Yum Repository. To search for a package you would simply issue this command as root.

yum search package

Once you have found the package you want to install you will need to run the following command.

yum install package

This will install the package and any package dependencies. You can also remove packages with the yum command, however be very careful with this since you do not want to remove key system packages from your server.
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