rush(8) on Linux
The text 54d6cec67a67, as Debian 12 (Bookworm) shipped it.
restricted user shell
Flags it lists
-
--debug -
--dump -
--lint -
--security-check -
--show-default -
--test -
--trace -
--user -
-C -
-D -
-T -
-c -
-d -
-i -
-t -
-u -
-x