Annotation of src/usr.bin/w/w.1, Revision 1.1.1.1
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32: .\" @(#)w.1 8.1 (Berkeley) 6/6/93
33: .\"
34: .Dd June 6, 1993
35: .Dt W 1
36: .Os BSD 4
37: .Sh NAME
38: .Nm w
39: .Nd "who present users are and what they are doing"
40: .Sh SYNOPSIS
41: .Nm w
42: .Op Fl hin
43: .Op Fl M Ar core
44: .Op Fl N Ar system
45: .Op Ar user
46: .Sh DESCRIPTION
47: The
48: .Nm w
49: utility prints a summary of the current activity on the system,
50: including what each user is doing.
51: The first line displays the current time of day, how long the system has
52: been running, the number of users logged into the system, and the load
53: averages.
54: The load average numbers give the number of jobs in the run queue averaged
55: over 1, 5 and 15 minutes.
56: .Pp
57: The fields output are the user's login name, the name of the terminal the
58: user is on, the host from which the user is logged in, the time the user
59: logged on, the time since the user last typed anything,
60: and the name and arguments of the current process.
61: .Pp
62: The options are as follows:
63: .Bl -tag -width Ds
64: .It Fl h
65: Suppress the heading.
66: .It Fl i
67: Output is sorted by idle time.
68: .It Fl M
69: Extract values associated with the name list from the specified
70: core instead of the default
71: .Dq /dev/kmem .
72: .It Fl N
73: Extract the name list from the specified system instead of the
74: default
75: .Dq /netbsd .
76: .It Fl n
77: Show network addresses as numbers (normally
78: .Nm w
79: interprets addresses and attempts to display them symbolically).
80: .El
81: .Pp
82: If a
83: .Ar user
84: name is specified, the output is restricted to that user.
85: .Sh FILES
86: .Bl -tag -width /var/run/utmp -compact
87: .It Pa /var/run/utmp
88: list of users on the system
89: .El
90: .Sh SEE ALSO
91: .Xr who 1 ,
92: .Xr finger 1 ,
93: .Xr ps 1 ,
94: .Xr uptime 1 ,
95: .Sh BUGS
96: The notion of the
97: .Dq current process
98: is muddy.
99: The current algorithm is ``the highest numbered process on the terminal
100: that is not ignoring interrupts, or, if there is none, the highest numbered
101: process on the terminal''.
102: This fails, for example, in critical sections of programs like the shell
103: and editor, or when faulty programs running in the background fork and fail
104: to ignore interrupts.
105: (In cases where no process can be found,
106: .Nm w
107: prints
108: .Dq \- . )
109: .Pp
110: The
111: .Tn CPU
112: time is only an estimate, in particular, if someone leaves a background
113: process running after logging out, the person currently on that terminal is
114: .Dq charged
115: with the time.
116: .Pp
117: Background processes are not shown, even though they account for
118: much of the load on the system.
119: .Pp
120: Sometimes processes, typically those in the background, are printed with
121: null or garbaged arguments.
122: In these cases, the name of the command is printed in parentheses.
123: .Pp
124: The
125: .Nm w
126: utility does not know about the new conventions for detection of background
127: jobs.
128: It will sometimes find a background job instead of the right one.
129: .Sh COMPATIBILITY
130: The
131: .Fl f ,
132: .Fl l ,
133: .Fl s ,
134: and
135: .Fl w
136: flags are no longer supported.
137: .Sh HISTORY
138: The
139: .Nm
140: command appeared in
141: .Ux 3.0 .
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