_R_R_D_F_I_R_S_T(1)                          rrdtool                         _R_R_D_F_I_R_S_T(1)

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

SSYYNNOOPPSSIISS
     rrrrddttooooll ffiirrsstt _f_i_l_e_n_a_m_e [----rrrraaiinnddeexx _n_u_m_b_e_r] [----ddaaeemmoonn|--dd _a_d_d_r_e_s_s]

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

     _f_i_l_e_n_a_m_eThe name of the RRRRDD that contains the data.

     ----rrrraaiinnddeexx _n_u_m_b_e_r
             The index number of the RRRRAA that is to be examined. If  not  speci‐
             fied,  the  index defaults to zero. RRRRAA index numbers can be deter‐
             mined through rrrrddttooooll iinnffoo.

     ----ddaaeemmoonn|--dd _a_d_d_r_e_s_s
             Address of the rrdcached daemon.  For a list of  accepted  formats,
             see the --ll option in the rrdcached manual.

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

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

1.11.0                             2026-08-08                        _R_R_D_F_I_R_S_T(1)
