mdb_stat(1) on Linux
The text c0a70d96b4b2, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
LMDB environment status tool
Flags it lists
-
-V -
-a -
-e -
-f -
-n -
-r -
-s