rrdfirst(1) on Linux
The text 8e3ab4618498, as Debian 9 (Stretch) shipped it.
Return the date of the first data sample in an RRA within an RRD
Flags it lists
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--rraindex
The text 8e3ab4618498, as Debian 9 (Stretch) shipped it.
Return the date of the first data sample in an RRA within an RRD
--rraindex