1.\" $OpenBSD: w.1,v 1.16 2004/08/18 21:27:20 jmc 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. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)w.1 8.1 (Berkeley) 6/6/93 31.\" 32.Dd June 6, 1993 33.Dt W 1 34.Os 35.Sh NAME 36.Nm w 37.Nd "display users who are logged on and what they are doing" 38.Sh SYNOPSIS 39.Nm w 40.Op Fl ahi 41.Op Fl M Ar core 42.Op Fl N Ar system 43.Op Ar user 44.Sh DESCRIPTION 45The 46.Nm 47utility prints a summary of the current activity on the system, 48including what each user is doing. 49The first line displays the current time of day, how long the system has 50been running, the number of users logged into the system, and the load 51averages. 52The load average numbers give the number of jobs in the run queue averaged 53over 1, 5 and 15 minutes. 54.Pp 55The fields output are the user's login name, the name of the terminal the 56user is on, the host from which the user is logged in, the time the user 57logged on, the time since the user last typed anything, 58and the name and arguments of the current process. 59.Pp 60The options are as follows: 61.Bl -tag -width Ds 62.It Fl a 63Attempt to translate network addresses into names. 64.It Fl h 65Suppress the heading. 66.It Fl i 67Output is sorted by idle time. 68.It Fl M Ar core 69Extract values associated with the name list from the specified 70.Ar core 71instead of the running kernel. 72.It Fl N Ar system 73Extract the name list from the specified 74.Ar system 75instead of the running kernel. 76.El 77.Pp 78If a 79.Ar user 80name is specified, the output is restricted to that user. 81.Sh FILES 82.Bl -tag -width /var/run/utmp -compact 83.It Pa /var/run/utmp 84list of users on the system 85.El 86.Sh SEE ALSO 87.Xr finger 1 , 88.Xr ps 1 , 89.Xr uptime 1 , 90.Xr who 1 , 91.Xr utmp 5 92.Sh STANDARDS 93The 94.Fl f , 95.Fl l , 96.Fl s , 97.Fl u , 98and 99.Fl w 100flags are no longer supported. 101.Sh HISTORY 102The 103.Nm 104command appeared in 105.Bx 3.0 . 106.Sh BUGS 107The notion of the 108.Dq current process 109is muddy. 110The current algorithm is 111``the highest numbered process on the terminal 112that is not ignoring interrupts, or, if there is none, the highest numbered 113process on the terminal.'' 114This fails, for example, in critical sections of programs like the shell 115and editor, or when faulty programs running in the background fork and fail 116to ignore interrupts. 117(In cases where no process can be found, 118.Nm 119prints 120.Dq \- . ) 121.Pp 122The CPU time is only an estimate. 123In particular, if someone leaves a background 124process running after logging out, the person currently on that terminal is 125.Dq charged 126with the time. 127.Pp 128Background processes are not shown, even though they account for 129much of the load on the system. 130.Pp 131Sometimes processes, typically those in the background, are printed with 132null or garbaged arguments. 133In these cases, the name of the command is printed in parentheses. 134.Pp 135The 136.Nm 137utility does not know about the new conventions for detection of background 138jobs. 139It will sometimes find a background job instead of the right one. 140