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Thread: XZ Utils

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    XZ Utils

    XZ Utils is free general-purpose data compression software with high compression ratio. XZ Utils were written for POSIX-like systems, but also work on some not-so-POSIX systems. XZ Utils are the successor to LZMA Utils.

    The core of the XZ Utils compression code is based on LZMA SDK, but it has been modified quite a lot to be suitable for XZ Utils. The primary compression algorithm is currently LZMA2, which is used inside the .xz container format. With typical files, XZ Utils create 30 % smaller output than gzip and 15 % smaller output than bzip2.

    XZ Utils consist of several components:
    * liblzma is a compression library with API similar to that of zlib.
    * 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.
    * Emulation of command line tools of LZMA Utils eases transition from LZMA Utils to XZ Utils.
    While liblzma has a zlib-like API, liblzma doesn't include any file I/O functions. A separate I/O library is planned, which would abstract handling of .gz, .bz2, and .xz files with an easy to use API.

    http://tukaani.org/xz/

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