ps

Documentation

Overview

Print process information.

Synopsis:

ps [-Aaex] [aux]

Description:

ps reads the /proc filesystem and prints nice things about what it
finds.  /proc in linux has grown by a process of Evilution, so it's
messy.

Options:

 -A: select all processes. Identical to -e.
 -e: select all processes. Identical to -A.
 -x: BSD-Like style, with STAT Column and long CommandLine
 -a: print all process except whose are session leaders or unlinked with terminal
aux: see every process on the system using BSD syntax