Package hexer

Interactive binary editor

http://devel.ringlet.net/editors/hexer/

Hexer is an interactive binary editor (also known as a hex-editor)
with a Vi-like interface. Its most important features are multiple buffers,
multiple-level undo, command-line editing with completion, and binary regular
expressions.

General Commands (Section 1)
hexer
hexer is a multi-buffer editor for viewing and manipulating binary files. It can't (shouldn't) be used for editing block devices, because it tries to load the...