1.\" Copyright (c) 1980, 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)w.1 8.1 (Berkeley) 6/6/93 33.\" 34.Dd June 6, 1993 35.Dt W 1 36.Os BSD 4 37.Sh NAME 38.Nm w 39.Nd "who present users are and what they are doing" 40.Sh SYNOPSIS 41.Nm w 42.Op Fl hin 43.Op Fl M Ar core 44.Op Fl N Ar system 45.Op Ar user 46.Sh DESCRIPTION 47The 48.Nm w 49utility prints a summary of the current activity on the system, 50including what each user is doing. 51The first line displays the current time of day, how long the system has 52been running, the number of users logged into the system, and the load 53averages. 54The load average numbers give the number of jobs in the run queue averaged 55over 1, 5 and 15 minutes. 56.Pp 57The fields output are the user's login name, the name of the terminal the 58user is on, the host from which the user is logged in, the time the user 59logged on, the time since the user last typed anything, 60and the name and arguments of the current process. 61.Pp 62The options are as follows: 63.Bl -tag -width Ds 64.It Fl h 65Suppress the heading. 66.It Fl i 67Output is sorted by idle time. 68.It Fl M 69Extract values associated with the name list from the specified 70core instead of the default 71.Dq /dev/kmem . 72.It Fl N 73Extract the name list from the specified system instead of the 74default 75.Dq /kernel . 76.It Fl n 77Show network addresses as numbers (normally 78.Nm w 79interprets addresses and attempts to display them symbolically). 80.El 81.Pp 82If a 83.Ar user 84name is specified, the output is restricted to that user. 85.Sh FILES 86.Bl -tag -width /var/run/utmp -compact 87.It Pa /var/run/utmp 88list of users on the system 89.El 90.Sh SEE ALSO 91.Xr who 1 , 92.Xr finger 1 , 93.Xr ps 1 , 94.Xr uptime 1 , 95.Sh BUGS 96The notion of the 97.Dq current process 98is muddy. 99The current algorithm is ``the highest numbered process on the terminal 100that is not ignoring interrupts, or, if there is none, the highest numbered 101process on the terminal''. 102This fails, for example, in critical sections of programs like the shell 103and editor, or when faulty programs running in the background fork and fail 104to ignore interrupts. 105(In cases where no process can be found, 106.Nm w 107prints 108.Dq \- . ) 109.Pp 110The 111.Tn CPU 112time is only an estimate, in particular, if someone leaves a background 113process running after logging out, the person currently on that terminal is 114.Dq charged 115with the time. 116.Pp 117Background processes are not shown, even though they account for 118much of the load on the system. 119.Pp 120Sometimes processes, typically those in the background, are printed with 121null or garbaged arguments. 122In these cases, the name of the command is printed in parentheses. 123.Pp 124The 125.Nm w 126utility does not know about the new conventions for detection of background 127jobs. 128It will sometimes find a background job instead of the right one. 129.Sh COMPATIBILITY 130The 131.Fl f , 132.Fl l , 133.Fl s , 134and 135.Fl w 136flags are no longer supported. 137.Sh HISTORY 138The 139.Nm 140command appeared in 141.Ux 3.0 . 142