formatdb(1) on Linux
The text 91a9817e541c, as Debian 4.0 (Etch) shipped it.
format protein or nucleotide databases for BLAST
Flags it lists
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-B -
-F -
-L -
-T -
-V -
-a -
-b -
-e -
-i -
-l -
-n -
-o -
-p -
-s -
-t -
-v