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W(1)			FreeBSD	General	Commands Manual			  W(1)

     w -- display who is logged	in and what they are doing

     w [--libxo] [-dhin] [-M core] [-N system] [user ...]

     The w utility prints a summary of the current activity on the system, in-
     cluding what each user is doing.  The first line displays the current
     time of day, how long the system has been running,	the number of users
     logged into the system, and the load averages.  The load average numbers
     give the number of	jobs in	the run	queue averaged over 1, 5 and 15	min-

     The fields	output are the user's login name, the name of the terminal the
     user is on, the host from which the user is logged	in, the	time the user
     logged on,	the time since the user	last typed anything, and the name and
     arguments of the current process.

     The options are as	follows:

	     Generate output via libxo(3) in a selection of different human
	     and machine readable formats.  See	xo_parse_args(3) for details
	     on	command	line arguments.

     -d	     dumps out the entire process list on a per	controlling tty	basis,
	     instead of	just the top level process.

     -h	     Suppress the heading.

     -i	     Output is sorted by idle time.

     -M	     Extract values associated with the	name list from the specified
	     core instead of the default /dev/kmem.

     -N	     Extract the name list from	the specified system instead of	the
	     default /boot/kernel/kernel.

     -n	     Do	not attempt to resolve network addresses (normally w inter-
	     prets addresses and attempts to display them as names).  When -n
	     is	specified more than once, hostnames stored in utmp are at-
	     tempted to	resolve	to display them	as network addresses.

     If	one or more user names are specified, the output is restricted to
     those users.

     /var/run/  list of users	on the system

     The -f, -l, -s, and -w flags are no longer	supported.

     finger(1),	ps(1), uptime(1), who(1), libxo(3), xo_parse_args(3)

     The w command appeared in 3.0BSD.

     The notion	of the "current	process" is muddy.  The	current	algorithm is
     "the highest numbered process on the terminal that	is not ignoring
     interrupts, or, if	there is none, the highest numbered process on the
     terminal".	 This fails, for example, in critical sections of programs
     like the shell and	editor,	or when	faulty programs	running	in the back-
     ground fork and fail to ignore interrupts.	 (In cases where no process
     can be found, w prints `-'.)

     The CPU time is only an estimate, in particular, if someone leaves	a
     background	process	running	after logging out, the person currently	on
     that terminal is "charged"	with the time.

     Background	processes are not shown, even though they account for much of
     the load on the system.

     Sometimes processes, typically those in the background, are printed with
     null or garbaged arguments.  In these cases, the name of the command is
     printed in	parentheses.

     The w utility does	not know about the new conventions for detection of
     background	jobs.  It will sometimes find a	background job instead of the
     right one.

FreeBSD	13.0		       December	1, 2015			  FreeBSD 13.0


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