bibtool(1) on Linux
The text b63e92719dc8, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
BibTeX file manipulation tool
Flags it lists
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-# -
-- -
-@ -
-A -
-F -
-K -
-M -
-R -
-S -
-V -
-X -
-c -
-d -
-f -
-h -
-i -
-k -
-m -
-o -
-q -
-r -
-s -
-v -
-x