hexdump(1) on OpenBSD
The text fd46cbf2f409, as OpenBSD 2.3, OpenBSD 2.2 shipped it.
ascii, decimal, hexadecimal, octal dump
Flags it lists
-
-b -
-c -
-d -
-e -
-f -
-n -
-o -
-s -
-v -
-x