rrdfirst(1) Return the date of the first data sample in an RRA within an RRD


rrdtool first filename [--rraindex number] [--daemon|-d address]


The first function returns the UNIX timestamp of the first data sample entered into the specified RRA of the RRD file.
The name of the RRD that contains the data.
--rraindex number
The index number of the RRA that is to be examined. If not specified, the index defaults to zero. RRA index numbers can be determined through rrdtool info.
--daemon|-d address
Address of the rrdcached daemon. For a list of accepted formats, see the -l option in the rrdcached manual.

 rrdtool first --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd


Burton Strauss <[email protected]> Daemon support added by Steve Shipway <[email protected]>