1.\" $NetBSD: w.1,v 1.12 2001/12/08 19:24:10 wiz Exp $ 2.\" 3.\" Copyright (c) 1980, 1990, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)w.1 8.1 (Berkeley) 6/6/93 35.\" 36.Dd June 6, 1993 37.Dt W 1 38.Os 39.Sh NAME 40.Nm w 41.Nd "who present users are and what they are doing" 42.Sh SYNOPSIS 43.Nm 44.Op Fl hin 45.Op Fl M Ar core 46.Op Fl N Ar system 47.Op Ar user 48.Sh DESCRIPTION 49The 50.Nm 51utility prints a summary of the current activity on the system, 52including what each user is doing. 53The first line displays the current time of day, how long the system has 54been running, the number of users logged into the system, and the load 55averages. 56The load average numbers give the number of jobs in the run queue averaged 57over 1, 5 and 15 minutes. 58.Pp 59The fields output are the user's login name, the name of the terminal the 60user is on, the host from which the user is logged in, the time the user 61logged on, the time since the user last typed anything, 62and the name and arguments of the current process. 63.Pp 64The options are as follows: 65.Bl -tag -width Ds 66.It Fl h 67Suppress the heading. 68.It Fl i 69Output is sorted by idle time. 70.It Fl M 71Extract values associated with the name list from the specified 72core instead of the default 73.Dq /dev/kmem . 74.It Fl N 75Extract the name list from the specified system instead of the 76default 77.Dq /netbsd . 78.It Fl n 79Show network addresses as numbers (normally 80.Nm 81interprets addresses and attempts to display them symbolically). 82.El 83.Pp 84If a 85.Ar user 86name is specified, the output is restricted to that user. 87.Sh FILES 88.Bl -tag -width /var/run/utmp -compact 89.It Pa /var/run/utmp 90list of users on the system 91.El 92.Sh SEE ALSO 93.Xr finger 1 , 94.Xr ps 1 , 95.Xr uptime 1 , 96.Xr who 1 97.Sh COMPATIBILITY 98The 99.Fl f , 100.Fl l , 101.Fl s , 102and 103.Fl w 104flags are no longer supported. 105.Sh HISTORY 106The 107.Nm 108command appeared in 109.Bx 3.0 . 110.Sh BUGS 111The notion of the 112.Dq current process 113is muddy. 114The current algorithm is ``the highest numbered process on the terminal 115that is not ignoring interrupts, or, if there is none, the highest numbered 116process on the terminal''. 117This fails, for example, in critical sections of programs like the shell 118and editor, or when faulty programs running in the background fork and fail 119to ignore interrupts. 120(In cases where no process can be found, 121.Nm 122prints 123.Dq \- . ) 124.Pp 125The 126.Tn CPU 127time is only an estimate, in particular, if someone leaves a background 128process running after logging out, the person currently on that terminal is 129.Dq charged 130with the time. 131.Pp 132Background processes are not shown, even though they account for 133much of the load on the system. 134.Pp 135Sometimes processes, typically those in the background, are printed with 136null or garbaged arguments. 137In these cases, the name of the command is printed in parentheses. 138.Pp 139The 140.Nm 141utility does not know about the new conventions for detection of background 142jobs. 143It will sometimes find a background job instead of the right one. 144