rrdfirst - Return the date of the first data sample in an RRA within an RRD

       Burton Strauss <Burton@ntopSupport.com> Daemon support added by Steve Shipway <steve@steveshipway.org>

1.7.2                                              2025-03-04                                        RRDFIRST(1)

       The first function returns the UNIX timestamp of the first data sample entered into the specified RRA of
       the RRD file.

       filename
               The name of the RRD that contains the data.

       --rraindexnumber
               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 rrdtoolinfo.

       --daemon|-daddress
               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

       rrdfirst - Return the date of the first data sample in an RRA within an RRD

rrdtoolfirstfilename [--rraindexnumber] [--daemon|-daddress]