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.

Yum is based off of Yup - The Yellow dog UPdater. Yum has a bunch of new features though. For instance:

- Multiple Repositories
- Simple config file
- Correct dependency calculation
- Much faster operation

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