This is a simple head utility that outputs in hexadecimal format. Characters that are non-printable are replaced with the “.” character.
You can download it from the following link: https://packetstormsecurity.com/files/download/78761/hex-head.c
Source: https://packetstormsecurity.com/files/78761/Utility-To-Dump-head-In-Hexadecimal.html