grub-probe(8) on Linux
The text 926be21d1738, as Debian 9 (Stretch) shipped it.
probe device information for GRUB
Flags it lists
-
--device -
--device-map -
--help -
--target -
--usage -
--verbose -
--version -
-0 -
-? -
-V -
-d -
-m -
-t -
-v