XZ
From Just Solve the File Format Problem
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* [http://tukaani.org/xz/embedded.html XZ Embedded] | * [http://tukaani.org/xz/embedded.html XZ Embedded] | ||
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| + | == Sample files == | ||
| + | * https://telparia.com/fileFormatSamples/archive/xz/ | ||
== References == | == References == | ||
Revision as of 21:15, 30 April 2022
XZ is a stream compression format with built-in integrity checks. It uses LZMA2 compression. Compressed streams are able to be concatenated and still be decompressible like a single-stream file.
XZ is a successor to LZMA_Alone format, and an alternative to Lzip.
Contents |
Identification
XZ files always have lengths that are multiples of 4 bytes, and they begin with a 6-byte "magic" sequence of (hex) FD 37 7A 58 5A 00 and end with footer "magic bytes" of 59 5A. (The ending bytes can be verified as a sign that the file has not been truncated in transmission.)
Software
- 7-Zip
- LZMA SDK
- XZ Utils:
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xz,unxz,xzcat, etc. -
xzdec - liblzma
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- XZ Embedded
Sample files
References
- Current spec
- Official site (has historical specs with other info)
- Wikipedia article
- Xz format inadequate for long-term archiving - Analysis of weaknesses and design errors in the xz format, by the author of another format
