change B<collectd>'s behavior. The path may be relative to the current working
directory.
+=item B<-P> I<E<lt>pid-fileE<gt>>
+
+Specify an alternative pid file. This overwrites any settings in the config
+file. This is thought for init-scripts that require the PID-file in a certain
+directory to work correctly. For everyday-usage use the B<PIDFile>
+config-option.
+
=item B<-f>
Don't fork to the background. I<collectd> will also B<not> close standard file
=head1 MODES
-collectd can operate in three different operating modes. The modes are
-described below.
+collectd can operate in four different operating modes. The modes are described
+below.
The simplest mode is the so called B<local mode>. Data is collected locally and
written in RRD files that reside in I<DataDir>. This is the default mode when
collectd is linked against C<librrd>.
-The other modes, B<client mode> and B<server mode>, are used to send data over
-a network and receive it again.
+The modes B<client mode> and B<server mode> are used to send data over a
+network and receive it again.
In B<client mode> the daemon collects the data locally and sends its results
-to one or more network addresses. No RRD files are written in this case. This
-is the only mode available if collectd is not linked against C<librrd>.
+to one or more network addresses. No RRD files are written locally in this
+case. If collectd is not linked against C<librrd> this is the default mode.
If started in B<server mode> the daemon will listen on one or more interfaces
and write the data it receives to RRD files. No data is collected locally.
DS:paging:GAUGE:HEARTBEAT:0:65535
DS:blocked:GAUGE:HEARTBEAT:0:65535
-=item lm_sensors (F<sensors-I<E<lt>chipE<gt>>-I<E<lt>featureE<gt>>.rrd>)
+=item lm_sensors fanspeed sensor (F<sensors-I<E<lt>instE<gt>>.rrd> or F<lm_sensors-I<E<lt>chipE<gt>>/fanspeed-I<E<lt>instE<gt>>.rrd>)
+
+ DS:value:GAUGE:HEARTBEAT:U:U
+
+=item lm_sensors temperature sensor (F<sensors-I<E<lt>instE<gt>>.rrd> or F<lm_sensors-I<E<lt>chipE<gt>>/temperature-I<E<lt>instE<gt>>.rrd>)
DS:value:GAUGE:HEARTBEAT:U:U
+=item lm_sensors voltage sensor (F<sensors-I<E<lt>instE<gt>>.rrd> or F<lm_sensors-I<E<lt>chipE<gt>>/voltage-I<E<lt>instE<gt>>.rrd>)
+
+ DS:voltage:GAUGE:HEARTBEAT:U:U
+
=item Serial port traffic (F<serial-I<E<lt>numE<gt>>.rrd>)
DS:incoming:COUNTER:HEARTBEAT:0:U