nvram(8) on macOS
The text b890dcbd07ef, as macOS 14.3, macOS 14.2, macOS 14.1, macOS 14.0, macOS 13.5, macOS 13.4, macOS 13.3, macOS 13.2, macOS 13.1, macOS 13.0, macOS 12.5, macOS 12.4, macOS 12.3, macOS 12.2, macOS 12.1, macOS 12.0.1 shipped it.
manipulate firmware NVRAM variables
Flags it lists
-
-c -
-d -
-f -
-p -
-x