DragonFly On-Line Manual Pages
WHO(1) DragonFly General Commands Manual WHO(1)
who - display who is logged in
who [-abdHlmqrstTuv] [file]
who am i
The who utility displays a list of all users currently logged on, showing
for each user the login name, tty name, the date and time of login, and
hostname if not local.
-a Same as -bdlprTtuv.
-b Time of last system boot.
-d Print dead processes.
-H Write column headings above the regular output.
-l Print system login processes.
-m Only print information about the current terminal. This is the
POSIX way of saying who am i.
-p Print active processes spawned by init(8).
-q "Quick mode": List only the names and the number of users currently
logged on. When this option is used, all other options are
-r Print the current runlevel. Supported runlevels are:
d (DEATH) The system has halted.
s (SINGLE_USER) The system is running in single user mode.
r (RUNCOM) The system is executing /etc/rc.
t (READ_TTYS) The system is processing /etc/ttys.
m (MULTI_USER) The system is running in multi-user mode.
T (CLEAN_TTYS) The system is in the process of stopping processes
associated with terminal devices.
c (CATATONIA) The system is in the process of shutting down and
will not create new processes.
-s List only the name, line and time fields. This is the default.
-T Print a character after the user name indicating the state of the
terminal line: `+' if the terminal is writable; `-' if it is not;
and `?' if a bad line is encountered.
-t Print last system clock change.
-u Print the idle time for each user, and the associated process ID.
-v When printing of more information is requested with -u, this switch
can be used to also printed process termination signals, process
exit status, session id for windowing and the type of the entry,
see documentation of ut_type in getutxent(3).
am I Returns the invoker's real user name.
file By default, who gathers information from the file /var/run/utmpx.
An alternative file may be specified which is usually
/var/log/wtmpx (or /var/log/wtmpx.[0-6] depending on site policy as
wtmpx can grow quite large and daily versions may or may not be
kept around after compression by ac(8)). The wtmpx file contains a
record of every login, logout, crash, shutdown and date change
since wtmpx was last truncated or created.
If /var/log/wtmpx is being used as the file, the user name may be empty
or one of the special characters '|', '}' and '~'. Logouts produce an
output line without any user name. For more information on the special
characters, see utmpx(5).
last(1), mesg(1), users(1), getuid(2), utmpx(5)
The who utility is expected to conform to IEEE Std 1003.2-1992
A who utility appeared in Version 6 AT&T UNIX.
DragonFly 5.7-DEVELOPMENT September 11, 2019 DragonFly 5.7-DEVELOPMENT