xz is a command line tool with syntax similar to that of gzip. xzdec is a decompression-only tool smaller than the full-featured xz tool. A set of shell scripts (xzgrep, xzdiff, etc.) have been adapted from gzip to ease viewing, grepping, and comparing compressed files.

2024年4月8日 · The .xz file format is a container format for compressed streams. There are no archiving capabilities, that is, the .xz format can hold only a single file just like the .gz and .bz2 file formats used by gzip and bzip2, respectively.

This is the case when xz is run by a script or tool, for example, GNU tar(1): XZ_OPT=-2v tar caf foo.tar.xz foo Scripts may use XZ_OPT, for example, to set script-specific de- fault compression options.

Even when using BufferedInputStream, the performance tends to be worse (maybe 10-20 % slower) than with LZMA2InputStream or XZInputStream (when the .xz file contains LZMA2-compressed data).

2024年7月29日 · XZ for Java aims to be a complete implementation of XZ data compression in pure Java.

XZ data compression support. Introduction. This aims to be a complete implementation of XZ data compression in pure Java. Features: Full support for the .xz file format specification version 1.2.1; Single-threaded streamed compression and decompression; Single-threaded decompression with limited random access support

XZ Utils 5.6.0 and 5.6.1 release tarballs contain a backdoor. The XZ projects were moved to their own website on xz.tukaani.org in January 2024 and back here in their original location in April 2024. The xz.tukaani.org links don’t work anymore.

XZ Embedded is a small decompressor for the .xz file format. It was developed with the Linux kernel in mind but it is easily usable in other projects too.

Creates a new XZ decompressor that decompresses exactly one XZ Stream from in with an optional memory usage limit and ability to disable verification of integrity checks. This is identical to SingleXZInputStream(InputStream,int) except that this also takes the verifyCheck argument.

2024年5月29日 · XZ Embedded has had somewhat comparable code with the per-loop 20-byte check since the beginning (2009) and it’s been in the Linux kernel since 2010. As most of the core compression code in XZ Utils, the original idea for this detail comes from LZMA SDK.