Compact (Unix)

From Just Solve the File Format Problem
(Difference between revisions)
Jump to: navigation, search
Line 1: Line 1:
 
{{FormatInfo
 
{{FormatInfo
 +
|name=compact (Unix)
 
|formattype=electronic
 
|formattype=electronic
 
|subcat=Compression
 
|subcat=Compression
|extensions={{ext|C}}, {{ext|c}}
+
|extensions={{ext|C}}
 
|released=~1979
 
|released=~1979
 
}}
 
}}
'''compact''' is an old Unix file compression utility and compressed file format, similar in function to [[pack]] and [[compress]]. It uses adaptive [[Huffman coding]]. It was developed by Colin L. McMaster.
+
{{DISPLAYTITLE:compact (Unix)}}'''compact''' is an old Unix file compression utility and compressed file format, similar in function to [[Pack (Unix)|pack]] and [[compress (Unix)|compress]]. It uses adaptive [[Huffman coding]]. It was developed by Colin L. McMaster.
  
 
It has companion utilities named <code>uncompact</code> and <code>ccat</code>.
 
It has companion utilities named <code>uncompact</code> and <code>ccat</code>.
Line 25: Line 26:
 
* [https://docstore.mik.ua/manuals/hp-ux/en/B2355-60130/compact.1.html HP-UX man page]
 
* [https://docstore.mik.ua/manuals/hp-ux/en/B2355-60130/compact.1.html HP-UX man page]
  
 +
[[Category:File formats with extension .c]]
 
[[Category:File formats with case sensitive extensions]]
 
[[Category:File formats with case sensitive extensions]]

Revision as of 13:07, 29 February 2020

File Format
Name compact (Unix)
Ontology
Extension(s) .C
Released ~1979

compact is an old Unix file compression utility and compressed file format, similar in function to pack and compress. It uses adaptive Huffman coding. It was developed by Colin L. McMaster.

It has companion utilities named uncompact and ccat.

Compacted files have a capitalized ".C" suffix.

Identification

Compacted files most likely start with bytes ff 1f.

However, 1f ff is also possible, depending on how the software was configured at compile time. It's not clear what the intent was.

Software

Source code:

Links

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox