|Maximum RPM: Taking the Red Hat Package Manager to the Limit|
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To summarize, a package management system uses the computer to keep track of all the various bits and pieces that comprise an application or an entire operating system. Most package management systems use a specially formatted file to keep everything together in a single, easily manageable entity, or package. Additionally, package management systems tend to provide one or more of the following functions:
Installing new packages.
Removing old packages.
Upgrading from an old package to a new one.
Obtaining information about installed packages.