who(1) General Commands Manual who(1)

who - Print information about users who are currently logged in.

who [-a|--all] [-b|--boot] [-d|--dead] [-H|--heading] [-l|--login] [--lookup] [-m ] [-p|--process] [-q|--count] [-r|--runlevel] [-s|--short] [-t|--time] [-u|--users] [-T|--mesg] [-h|--help] [-V|--version] [FILE]

Print information about users who are currently logged in.

same as -b -d --login -p -r -t -T -u
time of last system boot
print dead processes
print line of column headings
print system login processes
attempt to canonicalize hostnames via DNS
only hostname and user associated with stdin
print active processes spawned by init
all login names and number of users logged on
print current runlevel
print only name, line, and time (default)
print last system clock change
list users logged in
add user's message status as +, - or ?
Print help
Print version
[FILE]

v0.0.26

who 0.0.26