To keep your system in optimum shape, you need to be able to monitor it closely. Ubuntu provides a wealth of utilities designed to give you as little or as much feedback as you want. In this sample chapter, Paul and Andrew Hudson look at some of the basic monitoring tools and cover some tactics designed to keep your system up longer.
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Those familiar with UNIX system administration already know about the ps or process display command commonly found on most flavors of UNIX. Because Linux is closely related to UNIX, it also benefits from this command and enables you to quickly see the current running processes on the system as well as who owns them and how resource-hungry they are.