who - show who is logged on
who [OPTION]... [ FILE | ARG1 ARG2 ]
-a, --all
same as -b -d --login -p -r -t -T -u
-b, --boot
time of last system boot
-d, --dead
print dead processes
-H, --heading
print line of column headings
-i, --idle
add idle time as HOURS:MINUTES, . or old (deprecated, use -u)
--login
print system login processes (equivalent to SUS -l)
-l, --lookup
attempt to canonicalize hostnames via DNS (-l is deprecated, use
--lookup)
-m only hostname and user associated with stdin
-p, --process
print active processes spawned by init
-q, --count
all login names and number of users logged on
-r, --runlevel
print current runlevel
-s, --short
print only name, line, and time (default)
-t, --time
print last system clock change
-T, -w, --mesg
add user's message status as +, - or ?
-u, --users
lists users logged in
--message
same as -T
--writable
same as -T
--help display this help and exit
--version
output version information and exit
If FILE is not specified, use /var/run/utmp. /var/log/wtmp as FILE is
common. If ARG1 ARG2 given, -m presumed: `am i' or `mom likes' are
usual.
Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.
Report bugs to <bug-sh-utils@gnu.org>.
Copyright (C) 2000 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
The full documentation for who is maintained as a Texinfo manual. If
the info and who programs are properly installed at your site, the command
info who
should give you access to the complete manual.
GNU sh-utils 2.0.11 July 2001 WHO(1)
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