Freeze/Melt
From Just Solve the File Format Problem
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ChristoCoder (Talk | contribs) (Fixed source code link, site was dead) |
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== References == | == References == | ||
* [http://www.esrl.noaa.gov/gmd/dv/hats/cats/stations/qnxman/freeze.html Man page] (in NOAA site, which should know something about freezing!) | * [http://www.esrl.noaa.gov/gmd/dv/hats/cats/stations/qnxman/freeze.html Man page] (in NOAA site, which should know something about freezing!) | ||
| − | * [http:// | + | * [http://ibiblio.org/pub/linux/utils/compress/freeze-2.5.0.tar.gz/ Source code] |
[[Category:File formats with case sensitive extensions]] | [[Category:File formats with case sensitive extensions]] | ||
Revision as of 22:34, 26 January 2018
Freeze is a file compression utility used from the command line in Unix-style operating systems. Melt is the corresponding decompressor. It is considered obsolete now in favor of gzip.
A two-pass compression is done with a Lempel-Zev algorithm on the first pass and a dynamic Huffman algorithm on the second. The characteristics of the Huffman table used are added to the file. File attributes, ownership, etc., are preserved, and a .F extension is added. A two-byte magic number is prepended to the file (\037\236 octal for versions 1.x, and \037\237 for later versions).
References
- Man page (in NOAA site, which should know something about freezing!)
- Source code
