1.\" Copyright (c) 1980, 1990, 1991 Regents of the University of California. 2.\" 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.\" from: @(#)w.1 6.8 (Berkeley) 4/23/91 33.\" $Id: w.1,v 1.2 1993/08/01 07:26:32 mycroft Exp $ 34.\" 35.Dd April 23, 1991 36.Dt W 1 37.Os BSD 4 38.Sh NAME 39.Nm w 40.Nd "who present users are and what they are doing" 41.Sh SYNOPSIS 42.Nm w 43.Op Fl hi 44.Op Ar user 45.Sh DESCRIPTION 46.Nm W 47prints a summary of the current activity on the system, 48including what each user is doing. 49The heading shows the current time of day, how long the system has been up, 50the number of users logged into the system, and the load averages. 51The load average numbers give the number of jobs in the run queue 52averaged over 1, 5 and 15 minutes. 53.Pp 54The fields output are: 55the user's login name, the name of the terminal (tty) the user is on, 56the host from which the user is logged in, the time the user logged on, 57the time since the user last typed anything, 58the 59.Tn CPU 60time used by all processes and their children on that tty, 61the 62.Tn CPU 63time used by the currently active processes, and the name and arguments 64of the current process. 65.Pp 66Available options are: 67.Bl -tag -width Ds 68.It Fl h 69Suppress the heading. 70.It Fl i 71Output is sorted by idle time. 72.El 73.Pp 74If a 75.Ar user 76name is given, the output is restricted to that user. 77.Sh FILES 78.Bl -tag -width /var/run/utmp -compact 79.It Pa /var/run/utmp 80list of users on the system 81.El 82.Sh SEE ALSO 83.Xr who 1 , 84.Xr finger 1 , 85.Xr ps 1 86.Sh BUGS 87The notion of the 88.Dq current process 89is muddy. 90The current algorithm is ``the highest numbered process on the terminal that 91is not ignoring interrupts, or, if there is none, the highest numbered 92process on the terminal''. 93This fails, for example, in critical sections of programs like the shell 94and editor, or when faulty programs running in the background fork and fail 95to ignore interrupts. 96(In cases where no process can be found, 97.Nm w 98prints 99.Dq \- . ) 100.Pp 101The 102.Tn CPU 103time is only an estimate, in particular, if someone leaves a 104background process running after logging out, the person currently 105on that terminal is 106.Dq charged 107with the time. 108.Pp 109Background processes are not shown, even though they account for 110much of the load on the system. 111.Pp 112Sometimes processes, typically those in the background, are 113printed with null or garbaged arguments. 114In these cases, the name of the command is printed in parentheses. 115.Pp 116.Nm W 117does not know about the new conventions for detection of background jobs. 118It will sometimes find a background job instead of the right one. 119.Sh COMPATIBILITY 120The 121.Fl f , 122.Fl l , 123.Fl s , 124and 125.Fl w 126flags are no longer supported. 127.Sh HISTORY 128The 129.Nm 130command appeared in 131.Ux 3.0 . 132