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FreeOS.com: Exploring /proc

Dec 16, 2000, 12:38 (0 Talkback[s])
(Other stories by Trevor Warren)

[ Thanks to Mayank for this link. ]

"The Proc psuedo file system is a real time, memory resident file system that tracks the processes running on your machine and the state of your system. Read on to learn how to get the most out of the /proc file system."

"The most striking factor about the /proc file system is the fact that the file system doesn't exist on any particular media. The /proc File System is a pseudo file system residing in the virtual memory and maintains highly dynamic data on the state of your operating system. Most of the information in the /proc file system is updated to match the current state of the operating system. The contents of the /proc file system can be read by anyone who has the requisite permissions. However, certain parts of the /proc file system can be read only by the owner of the process and of course root. The contents of the /proc filesystem are used by many utilities which grab the data from the particular /proc directory and display it."

"Under Linux, we have utilities like lscpi, scanpci and pnpdump which help us detect the various PCI, ISA hardware chipsets and help us make the best choices as far as the io, dma and irq values are concerned. Similarly by looking at the values of the various parameters in the /proc file system, one can determine a lot about the current state of the kernel and the processes under way."

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