Annotation of src/usr.bin/w/w.1, Revision 1.18
1.18 ! jmc 1: .\" $OpenBSD: w.1,v 1.17 2005/01/09 16:37:02 jmc Exp $
1.2 deraadt 2: .\"
1.1 deraadt 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.
1.14 millert 14: .\" 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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: .\"
1.18 ! jmc 32: .Dd $Mdocdate$
1.1 deraadt 33: .Dt W 1
1.8 aaron 34: .Os
1.1 deraadt 35: .Sh NAME
36: .Nm w
1.6 deraadt 37: .Nd "display users who are logged on and what they are doing"
1.1 deraadt 38: .Sh SYNOPSIS
39: .Nm w
1.16 jmc 40: .Op Fl ahi
1.1 deraadt 41: .Op Fl M Ar core
42: .Op Fl N Ar system
43: .Op Ar user
44: .Sh DESCRIPTION
45: The
1.8 aaron 46: .Nm
1.1 deraadt 47: utility prints a summary of the current activity on the system,
48: including what each user is doing.
49: The first line displays the current time of day, how long the system has
50: been running, the number of users logged into the system, and the load
51: averages.
52: The load average numbers give the number of jobs in the run queue averaged
53: over 1, 5 and 15 minutes.
54: .Pp
55: The fields output are the user's login name, the name of the terminal the
56: user is on, the host from which the user is logged in, the time the user
57: logged on, the time since the user last typed anything,
58: and the name and arguments of the current process.
59: .Pp
60: The options are as follows:
1.11 aaron 61: .Bl -tag -width Ds
1.16 jmc 62: .It Fl a
63: Attempt to translate network addresses into names.
1.1 deraadt 64: .It Fl h
65: Suppress the heading.
66: .It Fl i
67: Output is sorted by idle time.
1.9 millert 68: .It Fl M Ar core
1.1 deraadt 69: Extract values associated with the name list from the specified
1.9 millert 70: .Ar core
1.13 miod 71: instead of the running kernel.
1.9 millert 72: .It Fl N Ar system
73: Extract the name list from the specified
74: .Ar system
1.13 miod 75: instead of the running kernel.
1.1 deraadt 76: .El
77: .Pp
78: If a
79: .Ar user
80: name 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
84: list of users on the system
85: .El
86: .Sh SEE ALSO
87: .Xr finger 1 ,
88: .Xr ps 1 ,
89: .Xr uptime 1 ,
1.16 jmc 90: .Xr who 1 ,
91: .Xr utmp 5
1.15 jmc 92: .Sh STANDARDS
1.10 aaron 93: The
94: .Fl f ,
95: .Fl l ,
96: .Fl s ,
1.12 aaron 97: .Fl u ,
1.10 aaron 98: and
99: .Fl w
100: flags are no longer supported.
101: .Sh HISTORY
102: The
103: .Nm
104: command appeared in
105: .Bx 3.0 .
1.1 deraadt 106: .Sh BUGS
107: The notion of the
108: .Dq current process
109: is muddy.
1.10 aaron 110: The current algorithm is
111: ``the highest numbered process on the terminal
1.1 deraadt 112: that is not ignoring interrupts, or, if there is none, the highest numbered
1.10 aaron 113: process on the terminal.''
1.1 deraadt 114: This fails, for example, in critical sections of programs like the shell
115: and editor, or when faulty programs running in the background fork and fail
116: to ignore interrupts.
117: (In cases where no process can be found,
1.8 aaron 118: .Nm
1.1 deraadt 119: prints
120: .Dq \- . )
121: .Pp
122: Background processes are not shown, even though they account for
123: much of the load on the system.
124: .Pp
125: Sometimes processes, typically those in the background, are printed with
126: null or garbaged arguments.
127: In these cases, the name of the command is printed in parentheses.
128: .Pp
1.8 aaron 129: The
130: .Nm
1.1 deraadt 131: utility does not know about the new conventions for detection of background
132: jobs.
133: It will sometimes find a background job instead of the right one.