[ Thanks to An Anonymous Reader for
this link. ]
“Procfs is a pseudo-filesystem (like sysfs and several others),
which means that files in /proc do not exist in your hard drive,
but the information they have is calculated on demand.“Like the rest of filesystems used in Linux, procfs is supported
by the Virtual File System (VFS). VFS is a kernel layer that
provides abstraction when working with file systems, so that it
handles the differences between file systems and shows a common
interface to work with them…”