hardware sensors monitor
sensorsd utility retrieves sensor
monitoring data like fan speed, temperature, voltage and
ami(4) logical disk status via
sysctl(3). When the state of any monitored sensor changes, an alert
is sent using syslog(3) and a command, if specified, is executed.
sensorsd monitors status
changes on all sensors that keep their state, thus sensors that
automatically provide status do not require any additional configuration. In
addition, for every sensor, no matter whether it automatically provides its
state or not, custom low and high limits may be set, so that a local notion
of sensor status can be computed by
indicating whether the sensor is within or is exceeding its limits.
Limit and command values for a particular sensor may be specified
sensorsd.conf(5) configuration file. This file is reloaded
The options are as follows:
- Check sensors every check seconds. The shortest reporting period for state changes will be three times this value. The default is 20.
- Do not daemonize. If this option is specified,
sensorsdwill run in the foreground.
- Configuration file for
sysctl(3), syslog(3), sensorsd.conf(5), syslogd(8)
sensorsd program first appeared in
Certain sensors may flip status from time to time. To guard
against false reports,
sensorsd implements a state
dumping mechanism. However, this inevitably introduces an additional delay
in status reporting and command execution, e.g. one may notice that
sensorsd makes its initial report about the state of
monitored sensors not immediately, but about 60 seconds after it is