$ curl cheat.sh/
# w
# Show who is logged on and what they are doing.
# Print user login, TTY, remote host, login time, idle time, current process.
# More information: <https://manned.org/w>.

# Show logged-in users info:
w

# Show logged-in users info without a header:
w -h

$
Follow @igor_chubin cheat.sh tldr