Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

1 files changed, 127 insertions, 0 deletions

diff --git a/shell_cmds/w/w.1 b/shell_cmds/w/w.1
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+.\" Copyright (c) 1980, 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" 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.
+.\" 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.
+.\"
+.\" 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.
+.\"
+.\"     @(#)w.1	8.1 (Berkeley) 6/6/93
+.\" $FreeBSD: src/usr.bin/w/w.1,v 1.20 2005/02/13 22:25:25 ru Exp $
+.\"
+.Dd June 6, 1993
+.Dt W 1
+.Os
+.Sh NAME
+.Nm w
+.Nd "display who is logged in and what they are doing"
+.Sh SYNOPSIS
+.Nm
+.Op Fl hin
+.Op Ar user ...
+.Sh DESCRIPTION
+The
+.Nm
+utility prints a summary of the current activity on the system,
+including what each user is doing.
+The first line displays the current time of day, how long the system has
+been running, 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
+The fields output are the user's login name, the name of the terminal 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,
+and the name and arguments of the current process.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl h
+Suppress the heading.
+.It Fl i
+Output is sorted by idle time.
+.El
+.Pp
+If one or more
+.Ar user
+names are specified, the output is restricted to those users.
+.Sh COMPATIBILITY
+The
+.Fl M ,
+.FL N ,
+.Fl d ,
+.Fl f ,
+.Fl l ,
+.Fl n ,
+.Fl s ,
+and
+.Fl w
+flags are no longer supported.
+.Sh SEE ALSO
+.Xr finger 1 ,
+.Xr ps 1 ,
+.Xr uptime 1 ,
+.Xr who 1
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 3.0 .
+.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
+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
+The
+.Nm
+utility does not know about the new conventions for detection of background
+jobs.
+It will sometimes find a background job instead of the right one.
+.Pp
+Long hostnames and IPv6 addresses may be truncated; however, the
+.Xr who 1
+utility will display full hostnames.