The rrdcollect daemon is responsible for fetching statistical
data from various soures (listed in rrdcollect.conf),
typically files under /proc/ directory. It periodically
reads them and searches for patterns from configuration file.
Values are then stored inside rrdtool's .rrd files.
RRDcollect follows the usual GNU command line syntax, with long
options starting with two dashes (`-').
Specifies which file should be read instead of default config file.
Program will not fork. Very useful when testing or debugging.
Increase verbosity. This option also implies --no-fork, since
you probably don't want RRDcollect in daemon mode trashing your terminal.
RRD update options
Specifies file to which rrdtool(1)-style commands should
be written. If file you specify is `-' (hyphen), then commans
are written to standard output (this case implies --no-fork).
When this option is used, RRDcollect will open pipe to rrdtool(1)
program and send it update commands. If you don't give program,
the compiled-in default is assumed (either `rrdtool - >/dev/null'
or full path to rrdtool(1) binary). The program option
can be specified as a full path or just a command name, in the latter
case the program should reside on PATH.
If no RRD update option is given, RRDcollect uses internal librrd routines
(the preferred mode of operation). If RRDcollect is not compiled
with librrd, then it will fall back to pipe-mode.
Help and information
Display RRDcollect's version, compile-time options and license.