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hxl

★ 63 Open GitHub ↗

Small, optimised terminal hex viewer with colour coding, inspired by hexyl.

// repository documentation

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hxl
===
[![Build Status](https://dev.azure.com/sjmulder/hxl/_apis/build/status/hxl?branchName=master)](https://dev.azure.com/sjmulder/hxl/_build/latest?definitionId=7&branchName=master)

**hxl** [_filename_]

Simple hex viewer inspired by [hexyl](https://github.com/sharkdp/hexyl).
I wanted to write a simple clone in C but got a bit carried away with
optimisations.

A totally unscientific test with a ~420 MB video file on my Debian
stretch machine with hxl 0.3.1:

$ time hexyl largefile >/dev/null
    1m00.87s real     0m55.00s user     0m05.87s system
    $ time ./hxl largefile >/dev/null
    0m09.44s real     0m09.15s user     0m00.28s system

(Note: these measurements predate switching from -O2 to -O3 which
 improved performance by about 35%.)

The other major differences from hexyl are that hxl does not draw boxes
around its output, does not use non-ASCII glyphs, and uses only basic
VT100 sequences. This to enhance compatibility and composability.

Running
-------
Should work on most Unix systems, including Linux, BSD, and macOS.

make
    make install   [DESTDIR=] [PREFIX=/usr/local] [MANPREFIX=PREFIX/man]
    make uninstall [DESTDIR=] [PREFIX=/usr/local] [MANPREFIX=PREFIX/man]

Author
------
Sijmen J. Mulder (<ik@sjmulder.nl>)

hxl

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