_R_R_D_F_I_R_S_T(1)                          rrdtool                         _R_R_D_F_I_R_S_T(1)

NNAAMMEE
     rrdfirst - Return the date of the first data sample in an RRA within an RRD

SSYYNNOOPPSSIISS
     rrrrddttooooll ffiirrsstt _f_i_l_e_n_a_m_e [----rrrraaiinnddeexx _n_u_m_b_e_r] [----ddaaeemmoonn|--dd _a_d_d_r_e_s_s]

DDEESSCCRRIIPPTTIIOONN
     The  ffiirrsstt 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 RRRRDD that contains the data.

     ----rrrraaiinnddeexx _n_u_m_b_e_r
             The index number of the RRRRAA that is to be examined. If  not  speci‐
             fied,  the  index defaults to zero. RRRRAA index numbers can be deter‐
             mined through rrrrddttooooll iinnffoo.

     ----ddaaeemmoonn|--dd _a_d_d_r_e_s_s
             Address of the rrdcached daemon.  For a list of  accepted  formats,
             see the --ll option in the rrdcached manual.

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

AAUUTTHHOORR
     Burton Strauss <Burton@ntopSupport.com> Daemon support added by Steve Ship‐
     way <steve@steveshipway.org>

1.10.0                             2026-05-23                        _R_R_D_F_I_R_S_T(1)
