what
what is an improved version of the w tool. It finds all processes
associated with a TTY (not just those registered in wtmp), and reports
all users that are running anything. In particular, unlike w, what
will also shows things running in detached screens/tmuxen.
Example output:
$ ./what
up 23m56s 4 users load 0.65 0.41 0.23 procs 1/403
USER TTY LOGIN INPUT OUTPUT WHAT
root tty1 23m53s 23m53s 23m53s /sbin/agetty --noclear tty1 linux
root tty7 23m53s 23m53s 23m53s /usr/lib/xorg-server/Xorg -nolisten tcp vt07 -auth /var/run/slim.auth
jon pts/0 9m36s 2s 2s python2 ./what
root none 177 more processes
jon none 42 more processes