ARJZ
From Just Solve the File Format Problem
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|subcat=Archiving | |subcat=Archiving | ||
|extensions={{ext|arj}} | |extensions={{ext|arj}} | ||
− | |released=~ | + | |released=~1994 |
}} | }} | ||
− | '''ARJZ''' is a compressed archive utility, primarily developed by | + | '''ARJZ''' is a compressed archive utility, primarily developed by Bulat Ziganshin (Булат Зиганшин). Its native file format is an incompatible variant of [[ARJ]]. |
== Format details == | == Format details == | ||
− | ARJZ | + | ARJZ's main features seem to be: |
− | + | * Increase ARJ's 26K history window to 32K, like [[LHA]]'s "lh6" method. Indicated by ARJ's ''minimum archiver version to extract'' field set to 50. | |
− | + | * Increase the history window to 64K, like LHA's "lh7" method. Indicated by ARJ's ''minimum archiver version to extract'' field set to 51. | |
+ | * Some sort of audio-targeted compression technique, enabled by the <code>-t9</code> option. Indicated by ARJ's "file type" field set to 9. | ||
== Identification == | == Identification == | ||
Like [[ARJ#Identification|ARJ]], an ARJZ file starts with bytes {{magic|0x60 0xea}}, and has <code>0x02</code> at offset 10. | Like [[ARJ#Identification|ARJ]], an ARJZ file starts with bytes {{magic|0x60 0xea}}, and has <code>0x02</code> at offset 10. | ||
− | Unlike ARJ, | + | Unlike ARJ, ARJZ files are observed to have <code>0x33</code> at offset 5 (meaning ''archiver version'' = 51). |
== Software == | == Software == | ||
* [{{SACFTPURL|pack|arjz015.zip}} ARJZ 0.15 alpha] - Includes binaries for DOS, OS/2, and Windows NT console. | * [{{SACFTPURL|pack|arjz015.zip}} ARJZ 0.15 alpha] - Includes binaries for DOS, OS/2, and Windows NT console. | ||
* [{{SACFTPURL|pack|unaz015.zip}} UNARJZ 0.15 beta] | * [{{SACFTPURL|pack|unaz015.zip}} UNARJZ 0.15 beta] | ||
+ | * ARJZ 0.06 source code: [https://archive.org/details/2015-02-12.fidonet.org.ua FTP mirror - fidonet.org.ua - 2015-02-12] → fidonet.org.ua/pub/sources/arjz006s.rar |
Latest revision as of 14:15, 1 September 2023
ARJZ is a compressed archive utility, primarily developed by Bulat Ziganshin (Булат Зиганшин). Its native file format is an incompatible variant of ARJ.
[edit] Format details
ARJZ's main features seem to be:
- Increase ARJ's 26K history window to 32K, like LHA's "lh6" method. Indicated by ARJ's minimum archiver version to extract field set to 50.
- Increase the history window to 64K, like LHA's "lh7" method. Indicated by ARJ's minimum archiver version to extract field set to 51.
- Some sort of audio-targeted compression technique, enabled by the
-t9
option. Indicated by ARJ's "file type" field set to 9.
[edit] Identification
Like ARJ, an ARJZ file starts with bytes 0x60 0xea
, and has 0x02
at offset 10.
Unlike ARJ, ARJZ files are observed to have 0x33
at offset 5 (meaning archiver version = 51).
[edit] Software
- ARJZ 0.15 alpha - Includes binaries for DOS, OS/2, and Windows NT console.
- UNARJZ 0.15 beta
- ARJZ 0.06 source code: FTP mirror - fidonet.org.ua - 2015-02-12 → fidonet.org.ua/pub/sources/arjz006s.rar