=head1 NAME rrdfirst - Return the date of the first data sample in an RRA within an RRD =head1 SYNOPSIS B<rrdtool> B<first> I<filename> [I<--rraindex number>] =head1 DESCRIPTION The B<first> function returns the UNIX timestamp of the first data sample entered into the specified RRA of the RRD file. =over 8 =item I<filename> The name of the B<RRD> that contains the data. =item I<--rraindex number> The index number of the B<RRA> that is to be examined. If not specified, the index defaults to zero. B<RRA> index numbers can be determined through B<rrdtool info>. =back =head1 AUTHOR Burton Strauss <Burton@ntopSupport.com>