On Unix-like computer systems, procfs, short for process file system, is a pseudo file system (a file system dynamically generated at boot) used to access process information from the kernel. The file system is often mounted at the /proc directory. Because /proc is not a real file system, it consumes no storage space and only a limited amount of memory.
procfs is supported under:
- Solaris
- BSD
- Linux (which extends it to non-process-related data)
- IBM AIX (operating system) (which bases its implementation on Linux to improve compatibility)
- QNX
Reference:
http://en.wikipedia.org/wiki/Procfs
