Zoo

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== Software ==
 
== Software ==
 
* [[Konvertor]]
 
* [[Konvertor]]
* [http://distcache.freebsd.org/ports-distfiles/zoo-2.10pl1.tar.gz zoo-2.10pl1.tar.gz]
 
* [http://www.ibiblio.org/pub/Linux/utils/compress/zoo-2.10-3.src.rpm zoo-2.10-3.src.rpm]
 
 
* Zoo - DOS binaries
 
* Zoo - DOS binaries
 
** {{CdTextfiles|carousel344/013/ZOO121.ZIP|v1.21}} (1986-09-21)
 
** {{CdTextfiles|carousel344/013/ZOO121.ZIP|v1.21}} (1986-09-21)
 
** {{CdTextfiles|hof91/ARC/ZOO201.EXE|v2.01}} (1988-08-25) - Also includes Fiz 2.0 and Stuff 1.0
 
** {{CdTextfiles|hof91/ARC/ZOO201.EXE|v2.01}} (1988-08-25) - Also includes Fiz 2.0 and Stuff 1.0
 
** {{CdTextfiles|simtel/simtel20/MSDOS/ARCHIVRS/ZOO210.EXE|v2.10}} (1991-07-09)
 
** {{CdTextfiles|simtel/simtel20/MSDOS/ARCHIVRS/ZOO210.EXE|v2.10}} (1991-07-09)
* {{CdTextfiles|simtelctc/disk1/ZOO/BOOZ20.ZIP;1|Booz 2.0}} - Extractor; includes source code and DOS binary
+
* Other official Zoo utilities:
 +
** {{CdTextfiles|simtelctc/disk1/ZOO/BOOZ20.ZIP;1|Booz 2.0}} - Extractor; includes source code and DOS binary
 +
** {{CdTextfiles|carousel344/013/LOOZ210.ZIP|Looz 2.1}}
 +
** {{CdTextfiles|carousel/013B/OOZ130.ZIP|Ooz 1.30}}
 +
** {{CdTextfiles|microhaus/mhblackbox3/ARCHIVER/SEZ230.ZIP|Sez 2.3}} - Makes self-extracting archives
 +
** {{CdTextfiles|simtelctc/disk1/ZOO/ATOZ112.ZIP;1|Atoz 1.12}} - Conversion helper
 
* [http://archives.math.utk.edu/software/multi-platform/gap/util/unzoo.c unzoo.c] by Martin Schoenert (Does not support LZD.)
 
* [http://archives.math.utk.edu/software/multi-platform/gap/util/unzoo.c unzoo.c] by Martin Schoenert (Does not support LZD.)
 
* {{Deark}}
 
* {{Deark}}
* {{CdTextfiles|carousel344/013/LOOZ210.ZIP|Looz 2.1}}
+
 
* {{CdTextfiles|carousel/013B/OOZ130.ZIP|Ooz 1.30}}
+
Source code for at least Zoo versions 2.01 and 2.1 (a.k.a. 2.10) was made public. There does not seem to be a centralized project to maintain it. A number of Linux distributions maintain their own patches.
* {{CdTextfiles|microhaus/mhblackbox3/ARCHIVER/SEZ230.ZIP|Sez 2.3}} - Makes self-extracting archives
+
* [http://www.nic.funet.fi/index/unix/tools/zoo/zoo-2.01.tar.gz zoo-2.01.tar.gz] - original(?) v2.01 source
* {{CdTextfiles|simtelctc/disk1/ZOO/ATOZ112.ZIP;1|Atoz 1.12}} - Conversion helper
+
* [http://www.nic.funet.fi/index/unix/tools/zoo/zoo-2.1.tar.gz zoo-2.1.tar.gz] - original(?) v2.1 source
 +
** Another copy: [https://mirrors.slackware.com/slackware/slackware64/source/a/zoo/] → zoo-2.10.tar.gz
 +
 
 +
Packages derived from the source code:
 +
* [http://distcache.freebsd.org/ports-distfiles/zoo-2.10pl1.tar.gz zoo-2.10pl1.tar.gz]
 +
* [http://www.ibiblio.org/pub/Linux/utils/compress/zoo-2.10-3.src.rpm zoo-2.10-3.src.rpm]
  
 
== Sample files ==
 
== Sample files ==

Revision as of 21:10, 5 January 2021

File Format
Name Zoo
Ontology
Extension(s) .zoo
PRONOM x-fmt/269
Wikidata ID Q219983
Released 1986

Zoo is a compressed archive format developed by Rahul Dhesi. It was one of the many competing archive formats in the 1980s, and was based (originally) on LZW compression. It had some popularity with Open/VMS and Amiga systems, but didn't ultimately win out over ZIP.

Contents

Discussion

The Zoo software encompassed several different utilities, which were sometimes distributed individually, and which had their own version numbers.

  • Zoo - The main program
  • Ooz - Extractor
  • Booz (Barebones Ooz) - Extractor; some versions can also list files
  • Looz (Ooz with List) - Extract/list/execute
  • Atoz - Helper utility for converting other formats (ARC, LBR) to Zoo
  • Fiz - Analyze damaged Zoo files
  • Stuff - File finder
  • Sez - Self-Extracting Zoo utility

Identification

Files have bytes DC A7 C4 FD at offset 20.

Compression

Compression methods:

ID Name Description
0 No packing Uncompressed
1 LZD LZW. A fairly generic LZW implementation, with a dynamic code size from 9 to 13 bits, and two special codes: 256=Clear, 257=Stop.
2 LZH LZ77+Huffman. Nearly identical to LHA's "lh5" method. A small difference is that Zoo defines a way to mark the end of data. The format is pretty well documented in the comments in unzoo.c by Martin Schoenert (see below).

Specifications

Software

Source code for at least Zoo versions 2.01 and 2.1 (a.k.a. 2.10) was made public. There does not seem to be a centralized project to maintain it. A number of Linux distributions maintain their own patches.

Packages derived from the source code:

Sample files

Links

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