NAME 
rrdfirst - Return the date of the first data sample in an RRA within an RRD
SYNOPSIS 
rrdtool first filename [--rraindex number]
DESCRIPTION 
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.
--rraindex number 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
rrdtool info.
AUTHOR 
Burton Strauss < mailto:Burton@ntopSupport.comBurton@ntopSupport.com >
