ps - list currently running processes
$ ps [--version] [-a] [-A] [-e] [-f] [-p pid-list] [-q pid-list] [-u user-list]
Print a list of currently running processes in the current TTY. For each process, print its PID (process ID), to which TTY it belongs, and invoking commandline (CMD).
-a
: Consider all processes that are associated with a TTY.-A
or -e
: Consider all processes, not just those in the current TTY.-f
: Also print for each process: UID (as resolved username), PPID (parent PID), and STATE (Runnable, Sleeping, Selecting, Reading, etc.)-p pid-list
: Only consider the given PIDs, if they exist. pid-list
is a list of PIDs, separated by commas or spaces.-q pid-list
: Only consider the given PIDs, if they exist. Output the processes in the order provided by pid-list
. pid-list
is a list of PIDs, separated by commas or spaces.-u user-list
: Only consider processes for the given users, if they exist. user-list
is a list of UIDs or login names, separated by commas or spaces.$ ps -ef