nvram(8) on macOS
The text a270c7b51fdc, as Mac OS X 10.4.11.x86, Mac OS X 10.4.10.x86, Mac OS X 10.4.9.x86, Mac OS X 10.4.8.x86, Mac OS X 10.4.7.x86, Mac OS X 10.4.6.x86, Mac OS X 10.4.5.x86 shipped it.
manipulate firmware NVRAM variables
Flags it lists
-
-p