Annotation of src/usr.bin/w/w.1, Revision 1.10
1.10 ! aaron 1: .\" $OpenBSD: w.1,v 1.9 1999/08/12 19:26:39 millert Exp $
1.2 deraadt 2: .\"
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34: .\" @(#)w.1 8.1 (Berkeley) 6/6/93
35: .\"
36: .Dd June 6, 1993
37: .Dt W 1
1.8 aaron 38: .Os
1.1 deraadt 39: .Sh NAME
40: .Nm w
1.6 deraadt 41: .Nd "display users who are logged on and what they are doing"
1.1 deraadt 42: .Sh SYNOPSIS
43: .Nm w
1.4 deraadt 44: .Op Fl hia
1.1 deraadt 45: .Op Fl M Ar core
46: .Op Fl N Ar system
47: .Op Ar user
48: .Sh DESCRIPTION
49: The
1.8 aaron 50: .Nm
1.1 deraadt 51: utility prints a summary of the current activity on the system,
52: including what each user is doing.
53: The first line displays the current time of day, how long the system has
54: been running, the number of users logged into the system, and the load
55: averages.
56: The load average numbers give the number of jobs in the run queue averaged
57: over 1, 5 and 15 minutes.
58: .Pp
59: The fields output are the user's login name, the name of the terminal the
60: user is on, the host from which the user is logged in, the time the user
61: logged on, the time since the user last typed anything,
62: and the name and arguments of the current process.
63: .Pp
64: The options are as follows:
1.9 millert 65: .Bl -tag -width XXXXXXXXX
1.1 deraadt 66: .It Fl h
67: Suppress the heading.
68: .It Fl i
69: Output is sorted by idle time.
1.9 millert 70: .It Fl M Ar core
1.1 deraadt 71: Extract values associated with the name list from the specified
1.9 millert 72: .Ar core
73: instead of the default
1.7 aaron 74: .Pa /dev/kmem .
1.9 millert 75: .It Fl N Ar system
76: Extract the name list from the specified
77: .Ar system
78: instead of the default
1.7 aaron 79: .Pa /bsd .
1.4 deraadt 80: .It Fl a
81: Attempt to translate network addresses into names.
1.1 deraadt 82: .El
83: .Pp
84: If a
85: .Ar user
86: name is specified, the output is restricted to that user.
87: .Sh FILES
88: .Bl -tag -width /var/run/utmp -compact
89: .It Pa /var/run/utmp
90: list of users on the system
91: .El
92: .Sh SEE ALSO
93: .Xr finger 1 ,
94: .Xr ps 1 ,
95: .Xr uptime 1 ,
1.7 aaron 96: .Xr who 1
1.10 ! aaron 97: .Sh COMPATIBILITY
! 98: The
! 99: .Fl f ,
! 100: .Fl l ,
! 101: .Fl s ,
! 102: and
! 103: .Fl w
! 104: flags are no longer supported.
! 105: .Sh HISTORY
! 106: The
! 107: .Nm
! 108: command appeared in
! 109: .Bx 3.0 .
1.1 deraadt 110: .Sh BUGS
111: The notion of the
112: .Dq current process
113: is muddy.
1.10 ! aaron 114: The current algorithm is
! 115: ``the highest numbered process on the terminal
1.1 deraadt 116: that is not ignoring interrupts, or, if there is none, the highest numbered
1.10 ! aaron 117: process on the terminal.''
1.1 deraadt 118: This fails, for example, in critical sections of programs like the shell
119: and editor, or when faulty programs running in the background fork and fail
120: to ignore interrupts.
121: (In cases where no process can be found,
1.8 aaron 122: .Nm
1.1 deraadt 123: prints
124: .Dq \- . )
125: .Pp
1.10 ! aaron 126: The CPU time is only an estimate.
! 127: In particular, if someone leaves a background
1.1 deraadt 128: process running after logging out, the person currently on that terminal is
129: .Dq charged
130: with the time.
131: .Pp
132: Background processes are not shown, even though they account for
133: much of the load on the system.
134: .Pp
135: Sometimes processes, typically those in the background, are printed with
136: null or garbaged arguments.
137: In these cases, the name of the command is printed in parentheses.
138: .Pp
1.8 aaron 139: The
140: .Nm
1.1 deraadt 141: utility does not know about the new conventions for detection of background
142: jobs.
143: It will sometimes find a background job instead of the right one.
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