ARJ

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* [[JAR (ARJ Software)]]
 
* [[JAR (ARJ Software)]]
 
* [[SDN (SDN Project)]]
 
* [[SDN (SDN Project)]]
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== Identification ==
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An ARJ archive starts with signature bytes {{magic|0x60 0xea}}.
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The full identification algorithm used by the ARJ software is given in its technical documentation.
  
 
== Specifications ==
 
== Specifications ==
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** {{CdTextfiles|simtel/simtel20/MSDOS/ARCHIVRS/ARJ241A.EXE|v2.41a}} (1993-07-10)
 
** {{CdTextfiles|simtel/simtel20/MSDOS/ARCHIVRS/ARJ241A.EXE|v2.41a}} (1993-07-10)
 
** {{CdTextfiles|simtel/stmsdos9709/disk1/DISC1/ARCERS/ARJ250A.EXE|v2.50a}} (1995-12-12)
 
** {{CdTextfiles|simtel/stmsdos9709/disk1/DISC1/ARCERS/ARJ250A.EXE|v2.50a}} (1995-12-12)
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** [http://www.filegate.net/compress/arj271.exe v2.71] (1999-12-19)
 
** [https://www.sac.sk/download/pack/arj286.exe v2.86] (2012-01-02)
 
** [https://www.sac.sk/download/pack/arj286.exe v2.86] (2012-01-02)
 
* ARJ32 - Official compression/decompression software for Windows console
 
* ARJ32 - Official compression/decompression software for Windows console
** [https://www.sac.sk/download/pack/arj32320.exe ARJ32 v3.20]
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** [http://www.filegate.net/compress/arj32v3j.exe v3.04] (1999-12-19)
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** [https://www.sac.sk/download/pack/arj32320.exe v3.20] (2012-01-02)
 
* UNARJ - Official software, decompression only
 
* UNARJ - Official software, decompression only
 
** {{CdTextfiles|simtel/simtel20/MSDOS/ARCHIVRS/UNARJ241.ZIP|v2.41}} (1993-04) - Source code + DOS binary
 
** {{CdTextfiles|simtel/simtel20/MSDOS/ARCHIVRS/UNARJ241.ZIP|v2.41}} (1993-04) - Source code + DOS binary
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* [http://arj.sourceforge.net/ Open-source ARJ]
 
* [http://arj.sourceforge.net/ Open-source ARJ]
 
* [[Konvertor]]
 
* [[Konvertor]]
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''Ed. note: Some newer versions of ARJ/ARJ32 have a long delay (2 minutes?) when you run them.''
  
 
== Sample files ==
 
== Sample files ==

Revision as of 17:48, 3 July 2020

File Format
Name ARJ
Ontology
Extension(s) .arj
PRONOM fmt/610
Wikidata ID Q2693033
Released 1990 (beta), 1991 (v1.00)

ARJ is a compressed archive format, and associated software. It was developed by Robert Jung.

ARJ was one of the leading compression tools during the 1990s. While it was a bit slower than PKZIP, it sported many more options, some of which were unique during that time (archives over multiple disks/volumes, fine-tuning of the compression algorithms used based on the data that was being compressed, recovery records to recover from simple transmission errors, etc.).

See also:

Contents

Identification

An ARJ archive starts with signature bytes 0x60 0xea.

The full identification algorithm used by the ARJ software is given in its technical documentation.

Specifications

Software

Ed. note: Some newer versions of ARJ/ARJ32 have a long delay (2 minutes?) when you run them.

Sample files

Links

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