---
name: "unihexfill"
section: "1"
platform: "linux"
package: "unifont-bin"
version: "1:15.1.01-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/unihexfill"
---

# unihexfill(1)

Generate range of Unifont 4- or 6-digit hexadecimal glyphs

## NAME

unihexfill - Generate range of Unifont 4- or 6-digit hexadecimal glyphs

## SYNOPSIS

**unihexfill** \< *unassigned-ranges.txt* \> *filler-glyphs.hex*

## DESCRIPTION

**unihexfill** is a shell script that reads a list of code point ranges from STDIN and produces filler glyphs of 4- or 6-digit code points on STDOUT.

The format of the input file is a combination of comment lines, single code points on a line, and start/stop pairs of code points on a line separated by a space.  Comment lines start with a semicolon (';') by convention.  Start and stop code points are strings of hexadecimal digits, by convention either four or six digits.

**unihexfill** invokes **unihexgen** for each non-comment line in its input file.  If a codepoint is less than or equal to "FFFF" (i.e., 0xFFFF), a four-digit hexadecimal number is encoded within the corresponding Unifont glyph as two digits on each of two rows.  Otherwise, a six-digit hexadecimal number is encoded as three digits on each of two rows.

## OPTIONS

There are no options.

## FILES

\*.txt as input; \*.hex as output.

## EXAMPLE

In the Unifont source package, the file font/plane01/Makefile generates Unicode Plane 1 hexadecimal filler glyphs of unassigned code points within assigned scripts with this single-line command:

**../../bin/unihexfill** \< unassigned-ranges.txt \> unassigned.hex

## SEE ALSO

[**bdfimplode**(1)](/bdfimplode/1.md), [**hex2bdf**(1)](/hex2bdf/1.md), **hex2otf**(1), [**hex2sfd**(1)](/hex2sfd/1.md), [**hexbraille**(1)](/hexbraille/1.md), [**hexdraw**(1)](/hexdraw/1.md), [**hexkinya**(1)](/hexkinya/1.md), [**hexmerge**(1)](/hexmerge/1.md), **johab2syllables**(1), [**johab2ucs2**(1)](/johab2ucs2/1.md), [**unibdf2hex**(1)](/unibdf2hex/1.md), [**unibmp2hex**(1)](/unibmp2hex/1.md), [**unibmpbump**(1)](/unibmpbump/1.md), [**unicoverage**(1)](/unicoverage/1.md), [**unidup**(1)](/unidup/1.md), [**unifont**(5)](/unifont/5.md), **unifont-johab631**(5), [**unifont-viewer**(1)](/unifont-viewer/1.md), [**unifont1per**(1)](/unifont1per/1.md), [**unifontchojung**(1)](/unifontchojung/1.md), [**unifontksx**(1)](/unifontksx/1.md), [**unifontpic**(1)](/unifontpic/1.md), **unigen-hangul**(1), [**unigencircles**(1)](/unigencircles/1.md), [**unigenwidth**(1)](/unigenwidth/1.md), [**unihex2bmp**(1)](/unihex2bmp/1.md), [**unihex2png**(1)](/unihex2png/1.md), [**unihexgen**(1)](/unihexgen/1.md), **unihexpose**(1), [**unihexrotate**(1)](/unihexrotate/1.md), **unijohab2html**(1), [**unipagecount**(1)](/unipagecount/1.md), [**unipng2hex**(1)](/unipng2hex/1.md)

## AUTHOR

**unihexfill** was written by Paul Hardy.

## LICENSE

**unihexfill** is Copyright © 2014 Paul Hardy.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

## BUGS

No known real bugs exist, except that this software does not perform extensive error checking on its input file.  Any line that appears to begin with a hexadecimal digit is fed to **unihexgen.**