Annotation of src/usr.bin/w/w.1, Revision 1.3
1.3 ! ccappuc 1: .\" $OpenBSD: w.1,v 1.2 1996/06/26 05:42:45 deraadt 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
38: .Os BSD 4
39: .Sh NAME
40: .Nm w
41: .Nd "who present users are and what they are doing"
42: .Sh SYNOPSIS
43: .Nm w
44: .Op Fl hin
45: .Op Fl M Ar core
46: .Op Fl N Ar system
47: .Op Ar user
48: .Sh DESCRIPTION
49: The
50: .Nm w
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:
65: .Bl -tag -width Ds
66: .It Fl h
67: Suppress the heading.
68: .It Fl i
69: Output is sorted by idle time.
70: .It Fl M
71: Extract values associated with the name list from the specified
72: core instead of the default
73: .Dq /dev/kmem .
74: .It Fl N
75: Extract the name list from the specified system instead of the
76: default
1.3 ! ccappuc 77: .Dq /bsd .
1.1 deraadt 78: .It Fl n
79: Show network addresses as numbers (normally
80: .Nm w
81: interprets addresses and attempts to display them symbolically).
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 who 1 ,
94: .Xr finger 1 ,
95: .Xr ps 1 ,
96: .Xr uptime 1 ,
97: .Sh BUGS
98: The notion of the
99: .Dq current process
100: is muddy.
101: The current algorithm is ``the highest numbered process on the terminal
102: that is not ignoring interrupts, or, if there is none, the highest numbered
103: process on the terminal''.
104: This fails, for example, in critical sections of programs like the shell
105: and editor, or when faulty programs running in the background fork and fail
106: to ignore interrupts.
107: (In cases where no process can be found,
108: .Nm w
109: prints
110: .Dq \- . )
111: .Pp
112: The
113: .Tn CPU
114: time is only an estimate, in particular, if someone leaves a background
115: process running after logging out, the person currently on that terminal is
116: .Dq charged
117: with the time.
118: .Pp
119: Background processes are not shown, even though they account for
120: much of the load on the system.
121: .Pp
122: Sometimes processes, typically those in the background, are printed with
123: null or garbaged arguments.
124: In these cases, the name of the command is printed in parentheses.
125: .Pp
126: The
127: .Nm w
128: utility does not know about the new conventions for detection of background
129: jobs.
130: It will sometimes find a background job instead of the right one.
131: .Sh COMPATIBILITY
132: The
133: .Fl f ,
134: .Fl l ,
135: .Fl s ,
136: and
137: .Fl w
138: flags are no longer supported.
139: .Sh HISTORY
140: The
141: .Nm
142: command appeared in
143: .Ux 3.0 .
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