Archiving

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(Archiving only)
(Stream compression formats)
Line 52: Line 52:
 
A stream format takes a stream of bytes, and outputs a different, hopefully smaller, stream of bytes. These compression formats are often used internally in other data structures to compress data, as well as in network protocols, such as http. Used stand-alone, a stream compression format does not offer archiving capability, however in the UNIX doctrine, an archiver like [[tar]] can be combined with an archive format to produce a proper compressed archive.
 
A stream format takes a stream of bytes, and outputs a different, hopefully smaller, stream of bytes. These compression formats are often used internally in other data structures to compress data, as well as in network protocols, such as http. Used stand-alone, a stream compression format does not offer archiving capability, however in the UNIX doctrine, an archiver like [[tar]] can be combined with an archive format to produce a proper compressed archive.
  
* [[bz2]] - [[BZIP2]]  
+
* [[BZIP2]] (.bz2)
* [[?Z?]] - [[Crunch]]
+
* [[gz]] - [[GZIP]]
+
* [[ecm]] - [[Error Code Modeler]]
+
* [[LZMA]] [[lzma]]
+
* [[?Q?]] - [[Squeeze/SQ]]
+
* [[XZ]] [[xz]]
+
* [[?Y?]] - [[CrLZH]]
+
* [[lz]] - [[LZIP]]
+
* [[LZOP]] [[lzop]]
+
* [[Z]] - [[LZW]]
+
* [[DEFLATE]] [[rfc1951]]
+
 
* [[CCITT Group 4]]
 
* [[CCITT Group 4]]
 +
* [[CrLZH]] (.?y?)
 +
* [[Crunch]] (.?z?)
 +
* [[GZIP]] (.gz)
 +
* [[Error Code Modeler]] (.ecm)
 +
* [[LZIP]] (.lz)
 +
* [[LZMA]] (.lzma)
 +
* [[LZOP]] (.lzop)
 +
* [[LZW]] (.z)
 +
* [[Squeeze/SQ]] (.?q?)
 +
* [[XZ]] (.xz)
  
 
== Uncategorized ==
 
== Uncategorized ==

Revision as of 17:01, 22 November 2012

File Formats > Electronic File Formats > Compression

(Lossless, for generic data + file archives)


Compression + archiving

(Multiple files => 1 file, makes it smaller)

Archiving only

(many files => 1 file, no compression attempted)

Stream compression formats

A stream format takes a stream of bytes, and outputs a different, hopefully smaller, stream of bytes. These compression formats are often used internally in other data structures to compress data, as well as in network protocols, such as http. Used stand-alone, a stream compression format does not offer archiving capability, however in the UNIX doctrine, an archiver like tar can be combined with an archive format to produce a proper compressed archive.

Uncategorized

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