a hex dump utility
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
- fully integrate and then delete files of previous version
- escape with frames
- bytes per line based on terminal width
- double line aligned output
- lower-case hexadecimal