X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/8c8a5b54e79564c14fc7a2823a21a8f048449bcf..af359dea2e5ab3e937b62107ecd6a51d78189ed7:/usr/src/usr.bin/w/w.1 diff --git a/usr/src/usr.bin/w/w.1 b/usr/src/usr.bin/w/w.1 index b28bab3e02..779439f0e3 100644 --- a/usr/src/usr.bin/w/w.1 +++ b/usr/src/usr.bin/w/w.1 @@ -1,63 +1,130 @@ -.\" Copyright (c) 1980, 1990 Regents of the University of California. +.\" Copyright (c) 1980, 1990, 1991 Regents of the University of California. .\" All rights reserved. .\" -.\" %sccs.include.redist.man% +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. .\" -.\" @(#)w.1 6.6 (Berkeley) %G% +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. .\" -.TH W 1 "%Q" -.UC 4 -.SH NAME -w \- who is logged in and what they are doing -.SH SYNOPSIS -.B w -[ -.B \-hi -] [ user ] -.SH DESCRIPTION -.I W +.\" @(#)w.1 6.8 (Berkeley) 4/23/91 +.\" +.Dd April 23, 1991 +.Dt W 1 +.Os BSD 4 +.Sh NAME +.Nm w +.Nd "who present users are and what they are doing" +.Sh SYNOPSIS +.Nm w +.Op Fl hi +.Op Ar user +.Sh DESCRIPTION +.Nm W prints a summary of the current activity on the system, including what each user is doing. -The heading line shows the current time of day, -how long the system has been up, -the number of users logged into the system, -and the load averages. +The heading shows the current time of day, how long the system has been up, +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 minutes. -.PP +.Pp The fields output are: -the users login name, -the name of the tty the user is on, -the host from which the user is logged in, -the time the user logged on, +the user's login name, the name of the terminal (tty) 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, -the name and arguments of the current process. -.PP -The -.B \-h -flag suppresses the heading. -The -.B \-i -flag causes output to sorted by idle time. -The -.B \-flsuw -flags are no longer supported. -.PP +the +.Tn CPU +time used by all processes and their children on that tty, +the +.Tn CPU +time used by the currently active processes, and the name and arguments +of the current process. +.Pp +Available options are: +.Bl -tag -width Ds +.It Fl h +Suppress the heading. +.It Fl i +Output is sorted by idle time. +.El +.Pp If a -.I user -name is included, -the output will be restricted to that user. -.SH FILES -.ta 1i -/var/run/utmp -.br -/dev/kmem -.br -/dev/drum -.SH "SEE ALSO" -who(1), finger(1), ps(1) -.SH BUGS -.PP +.Ar user +name is given, the output is restricted to that user. +.Sh FILES +.Bl -tag -width /var/run/utmp -compact +.It Pa /var/run/utmp +list of users on the system +.El +.Sh SEE ALSO +.Xr who 1 , +.Xr finger 1 , +.Xr ps 1 +.Sh BUGS +The notion of the +.Dq 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 background fork and fail +to ignore interrupts. +(In cases where no process can be found, +.Nm w +prints +.Dq \- . ) +.Pp +The +.Tn 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 +.Dq charged +with the time. +.Pp +Background processes are not shown, even though they account for +much of the load on the system. +.Pp 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. +.Pp +.Nm W +does not know about the new conventions for detection of background jobs. +It will sometimes find a background job instead of the right one. +.Sh COMPATIBILITY +The +.Fl f , +.Fl l , +.Fl s , +and +.Fl w +flags are no longer supported. +.Sh HISTORY +The +.Nm +command appeared in +.Ux 3.0 .