Linux - (Proc|Process) Filesystem (procfs)

1 - About

procfs (or the proc filesystem) is a special filesystem in UNIX-like operating systems that presents performance metrics about processes and other system information in a hierarchical file-like structure

The Linux monitoring tools such as top use it.

The /proc “file system” is a directory that contains a hierarchy of files that represent the current state of the Linux kernel. It allows users and applications to see the kernel's view of the system.

The /proc directory also contains information about system hardware and any currently running processes. Most files in the /proc file system are read-only, but some files (primarily those in /proc/sys) can be manipulated by users and applications to communicate configuration changes to the kernel.

3 - Documentation / Reference

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