Mail Archives: djgpp/1998/07/09/15:15:47
Hello all,
we are pleased to announce the second public beta release of our
new executable packer: UPX. The Ultimate Packer for eXecutables
is a portable, extensible, high-performance executable packer for
five different executable formats. It achieves an excellent compression
ratio and offers *very* fast decompression.
UPX can pack the following executable formats:
dos/exe, dos/sys, dos/com, djgpp2/coff and watcom/le
Here are some compression results, just to show you how UPX performs:
File size Compressed size Ratio Type Name
----------------- ----------------- ----- -------- --------
1239040 -> 524884 1236992 -> 522122 42.2% djgpp2/coff cc1.exe
341444 -> 121732 328188 -> 121429 37.0% dos/exe gws.exe
1267629 -> 450513 1013327 -> 437311 43.2% watcom/le descent2.exe
Compare these values with:
cc1.exe [DJP 1.07] 1239040 -> 649684
gws.exe [APACK 0.82b] 341444 -> 121992
gws.exe [WWPACK 3.05b5] 341444 -> 125422
descent2.exe [PMWLITE 1.33] 1267629 -> 670635
As we mentioned above this is a BETA TEST release, so DO NOT USE THIS
VERSION EXCEPT FOR TESTING. Only compress backups of your executables.
You can find UPX 0.20 at:
http://cdata.tvnet.hu/~ml/upx.html
Please report all problems or suggestions to the authors. Thanks.
Enjoy,
Laszlo & Markus
P.S. UPX is the successor of the DJP executable packer
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