The /proc Filesystem as a Programmer Tool
"Before we begin to talk about the proc filesystem as a programming facility, we need need to establish what it actually is. The proc filesystem is a pseudo-filesystem rooted at /proc that contains user-accessible objects that pertain to the runtime state of the kernel and, by extension, the executing processes that run on top of it. "Pseudo" is used because the proc filesystem exists only as a reflection of the in-memory kernel data structures it displays. This is why most files and directories within /proc are 0 bytes in size."
(Submitted by Noel Wed Jun 22, 2005 )
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