HACKOS2(1) User Contributed Perl Documentation HACKOS2(1)

# [NAME](#NAME)

hackos2 - edit the OS/2 table in a TrueType Font

# [SYNOPSIS](#SYNOPSIS)

```
  HACKOS2 [-c hex] [-d directory] [-f fsSelection] [-p hex] [-q]
          [-t num] [-u hex] [-w width] <infile> <outfile>
```

Hacks the OS/2 table of a ttf file copying from infile to outfile.

# [OPTIONS](#OPTIONS)

```
  -c      change codepage information (a 64 bit hex number)
  -d      specifies output directory for processing multiple files. In which
          case <outfile> is not used and <infile> may be a list including
          wildcards.
  -f      fsSelection value (16 bit hex) (e.g. 4240 for Thai fonts)
  -n      sets usFirstCharIndex given a hex value
  -p      change panose info
              (10 bytes of hex in reverse order: 0A090807060504030201)
  -q      Quiet mode (do not list names as they are processed)
  -t      Sets fsType (embedding) information (decimal)
  -u      change unicode info (a 128 bit hex number)
  -v      sets vendor tag to the first 4 chars of the string
  -w      set average char width (decimal)
  -x      sets usLastCharIndex given a hex value
```

For example, to convert a Win3.1 ANSI font to Win95 use the following:

```
  hackos2 -c01 -u03 old.ttf new.ttf
```

or for a Symbol font use:

```
  hackos2 -c80000000 -u0 old.ttf new.ttf
```

Or to revert:

```
  hackos2 -cnone other.ttf new.ttf
```

# [AUTHOR](#AUTHOR)

v1.9, 12-NOV-2014

Martin Hosken &lt;http://scripts.sil.org/FontUtils&gt;. (see CONTRIBUTORS for other authors).

# [LICENSING](#LICENSING)

Copyright (c) 1998-2016, SIL International (http://www.sil.org)

This script is released under the terms of the Artistic License 2.0. For details, see the full text of the license in the file LICENSE.

2026-10-03 perl v5.44.0

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Document: hackos2(1) from perl-font-ttf-scripts 1.06-r0 (Chainguard OS)