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Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition by Matthew Helmke

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Console-Based Monitoring

Those familiar with UNIX system administration already know the ps, or process display, command commonly found on most flavors of UNIX. Because of the close relationship between Linux and UNIX, it also includes this command, which enables you to see the current processes running on the system and who owns them and how resource-hungry they are.

Although the Linux kernel has its own distinct architecture and memory management, it also benefits from enhanced use of the /proc file system, the virtual file system found on many UNIX flavors. Through the /proc file system, you can communicate directly with the kernel to get a deep view of what is currently happening. Developers tend to use the /proc file system as a way of ...

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