1 .\" $OpenBSD: sensorsd.8,v 1.20 2008/03/16 22:26:43 jmc Exp $
2 .\" $DragonFly: src/usr.sbin/sensorsd/sensorsd.8,v 1.6 2008/11/02 18:29:07 swildner Exp $
4 .\" Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
5 .\" Copyright (c) 2005 Matthew Gream <matthew.gream@pobox.com>
6 .\" Copyright (c) 2007 Constantine A. Murenin <cnst@FreeBSD.org>
8 .\" Permission to use, copy, modify, and distribute this software for any
9 .\" purpose with or without fee is hereby granted, provided that the above
10 .\" copyright notice and this permission notice appear in all copies.
12 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
25 .Nd "hardware sensors monitor"
33 utility retrieves sensor monitoring data like fan speed,
34 temperature and voltage via
36 When the state of any monitored sensor changes, an alert is sent using
38 and a command, if specified, is executed.
42 monitors status changes on all sensors that keep their state,
43 thus sensors that automatically provide status do not require
44 any additional configuration.
45 In addition, for every sensor,
46 no matter whether it automatically provides its state or not,
47 custom low and high limits may be set,
48 so that a local notion of sensor status can be computed by
50 indicating whether the sensor is within or is exceeding its limits.
52 Limit and command values for a particular sensor may be specified in the
55 This file is reloaded upon receiving
58 The options are as follows:
59 .Bl -tag -width indent
64 The shortest reporting period for state changes
65 will be three times this value.
69 If this option is specified,
71 will run in the foreground.
74 .Bl -tag -width ".Pa /etc/sensorsd.conf"
75 .It Pa /etc/sensorsd.conf
76 Configuration file for
87 program first appeared in
92 Certain sensors may flip status from time to time.
93 To guard against false reports,
95 implements a state dumping mechanism.
96 However, this inevitably introduces
97 an additional delay in status reporting and command execution,
98 e.g.\& one may notice that
100 makes its initial report about the state of monitored sensors
101 not immediately, but about 60 seconds after it is started.