RRDFIRST(1)                          rrdtool                         RRDFIRST(1)

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

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

DESCRIPTION
     The  first function returns the UNIX timestamp of the first data sample en‐
     tered into the specified RRA of the RRD file.

     filenameThe name of the RRD that contains the data.

     --rraindex number
             The index number of the RRA that is to be examined. If  not  speci‐
             fied,  the  index defaults to zero. RRA index numbers can be deter‐
             mined 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

AUTHOR
     Burton Strauss <Burton@ntopSupport.com> Daemon support added by Steve Ship‐
     way <steve@steveshipway.org>

1.10.0                             2026-05-25                        RRDFIRST(1)
