pack (Unix)

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File Format
Name pack (Unix)
Ontology
Extension(s) .z
Wikidata ID Q29650301

pack is a command in Unix-style operating systems to compress files using Huffman coding. Files normally have a lowercase .z extension, appended to their names including any other extension they may already have in their uncompressed versions, e.g., file.txt.z.

Contents

See also

Identification

Files begin with bytes 0x1F 0x1E.

The gzip source code mentions an "old pack format" that begins with 0x1F 0x1F.

See also compress (Unix)#The 0x1f compression family.

Software

References

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