hexdump(1) on FreeBSD
The text 3a6a73b247c4, as FreeBSD 2.1.7.1-RELEASE, FreeBSD 2.1.7-RELEASE, FreeBSD 2.1.5-RELEASE, FreeBSD 2.0.5-RELEASE shipped it.
ascii, decimal, hexadecimal, octal dump
Flags it lists
-
-b -
-c -
-d -
-e -
-f -
-n -
-o -
-s -
-v -
-x