dc(1) on FreeBSD
The text 3fd61a9b89dd, as FreeBSD 13.0-RELEASE shipped it.
arbitrary-precision decimal reverse-Polish notation calculator
Flags it lists
-
--expression -
--extended-register -
--file -
--help -
--interactive -
--no-prompt -
--version -
-P -
-V -
-e -
-f -
-h -
-i -
-v -
-x