Software Development *

Listed below are a few of the freely available projects on which Greg has worked (and in most cases continues to work, albeit somewhat slowly now that a microhacker and a microslacker have entered his life):

Arena 16-bit X support, minor PNG fixes

BadRAM updates for 2.4.24 and 2.4.27 (Rick van Rein's Linux kernel patch)

check for Unix and OS/2 (CRC/Adler-32 filter, née crc; core code is Mark's)

defines script for Unix (automatically determine C compiler's predefined macros)

256-color Doom icons for Linux (especially nice with fvwm)

ega²ram, ega²lq, ega²fast (assembly-language DOS device drivers and TSRs)

original OS/2 elvis port (vi clone)

fdate for Unix (print system or file times in integer format)

file(1)/magic(5) contributions (determine file types)

from hacks (BSD mail utility)

gif2png palette optimization, auto-interlacing, quiet mode, summary info (+ timestamps, nicer names, color output in own version)

giftool patch to fix array-bounds bug, etc.

gpr (multimode, multi-OS ASCII-to-PostScript converter)

hd contributions (generic hex dumper for Unix, etc.; output similar to DOS DEBUG)

img2pdf (convert multiple PNG, TIFF and/or JPEG images to a PDF file)

intel2gas inline-assembly contributions (MASM-to-AT&T conversion only)

lha contributions (free Japanese compressor/archiver for Unix, etc.)

libpng MMX port (gcc/gas), fixes, additions, API

life contributions (OS/2 screen saver by Q)

mailx hacks to fix short-int/more(1) bug, add settable From: and Reply-To: support, support colors, etc. (BSD mail client)

MNG and JNG image formats (animated GIF replacement, transparent JPEG format)

Mozilla PNG rewrite (Netscape Communicator 6.0 open source code)

NetPBM alpha-channel support (in progress)

PNG image format (non-animated GIF and TIFF replacement)

png2linuxlogo (convert 80x80 palette PNG to linux_logo.h format for boot logo)

pngcheck contributions, including MNG and JNG support (tests images, displays chunk info)

pngquant (quantize/dither 32-bit RGBA PNG images to 8-bit or smaller RGBA-palette images)

pngsplit (splits PNG, MNG, JNG into constituent chunks)

pnmtopng / pngtopnm contributions (convert PNG images to and from NetPBM format)

pushd / popd contributions (OS/2 REXX clones of Unix pushd/popd/dirs built-ins)

rpng, rpng2 and wpng PNG demo programs for Unix/X and Win32

systype script for Linux
  (Welcome to Linux 2.2.17pre12 (ELF) on a 379 MB, dual 267 MHz Pentium II system.)

tiff2png fax aspect-ratio hack, error-handling fixes

timeset script for Unix (``poor man's ntpd'')

Unix timestamp code for unrar (free Unix/etc. unarchiver bundled with RAR for DOS)

UnZip

VMS ports of Berkeley uuencode and uudecode

which clone for OS/2, MS-DOS and Unix (find locations of commands)

X Mosaic hacks for progressive display of images, including GIF and PNG interlacing

XPaint PNG support and other features

XV PNG improvements, background-color/transparency option, jumbo patches

Zip, not to mention some fairly cool Info-ZIP logos (e.g., below)

wildcard support for the old (good) version of VMS zmodem

* Our buddy Dilbert is, of course, the creation of Scott Adams and is © 1994 United Feature Syndicate, Inc. Dilbert is also a major stud hacker, much like Greg. :-)