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28 .\" @(#)w.1 8.1 (Berkeley) 6/6/93
36 .Nd "display who is logged in and what they are doing"
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
52 The load average numbers give the number of jobs in the run queue averaged
53 over 1, 5 and 15 minutes.
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.
60 The options are as follows:
61 .Bl -tag -width indent
65 in a selection of different human and machine readable formats.
68 for details on command line arguments.
70 dumps out the entire process list on a per controlling
71 tty basis, instead of just the top level process.
75 Output is sorted by idle time.
77 Extract values associated with the name list from the specified
78 core instead of the default
81 Extract the name list from the specified system instead of the
83 .Pa /boot/kernel/kernel .
85 Do not attempt to resolve network addresses (normally
87 interprets addresses and attempts to display them as names).
90 is specified more than once, hostnames stored in utmp are attempted to
91 resolve to display them as network addresses.
96 names are specified, the output is restricted to those users.
98 .Bl -tag -width ".Pa /var/run/utx.active" -compact
99 .It Pa /var/run/utx.active
100 list of users on the system
109 flags are no longer supported.
126 The current algorithm is
128 the highest numbered process on the terminal
129 that is not ignoring interrupts, or, if there is none, the highest numbered
130 process on the terminal
132 This fails, for example, in critical sections of programs like the shell
133 and editor, or when faulty programs running in the background fork and fail
134 to ignore interrupts.
135 (In cases where no process can be found,
142 time is only an estimate, in particular, if someone leaves a background
143 process running after logging out, the person currently on that terminal is
147 Background processes are not shown, even though they account for
148 much of the load on the system.
150 Sometimes processes, typically those in the background, are printed with
151 null or garbaged arguments.
152 In these cases, the name of the command is printed in parentheses.
156 utility does not know about the new conventions for detection of background
158 It will sometimes find a background job instead of the right one.