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</div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">XZ Utils</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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Spanish" lang="es" hreflang="es" data-title="XZ Utils" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/XZ_Utils" title="XZ Utils – French" lang="fr" hreflang="fr" data-title="XZ Utils" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/XZ_Utils" title="XZ Utils – Korean" lang="ko" hreflang="ko" data-title="XZ Utils" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/XZ_Utils" title="XZ Utils – Japanese" lang="ja" hreflang="ja" data-title="XZ Utils" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Xz" title="Xz – Portuguese" lang="pt" hreflang="pt" data-title="Xz" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/XZ_Utils" title="XZ Utils – Finnish" lang="fi" hreflang="fi" data-title="XZ Utils" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/XZ_Utils" title="XZ Utils – Ukrainian" lang="uk" hreflang="uk" data-title="XZ Utils" data-language-autonym="Українська" data-language-local-name="Ukrainian" 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class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Lossless data compression software</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><caption class="infobox-title summary">XZ Utils</caption><tbody><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Original author(s)</a></th><td class="infobox-data">Lasse Collin</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data">The Tukaani Project</td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">5.6.4 / January 23, 2025<span class="noprint">; 12 days ago</span><span style="display:none"> (<span class="bday dtstart published updated">2025-01-23</span>)</span></div></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span class="url"><a rel="nofollow" class="external text" href="https://github.com/tukaani-project/xz">github<wbr />.com<wbr />/tukaani-project<wbr />/xz</a></span> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q539460#P1324" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li></ul> </div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="/wiki/C_(programming_language)" title="C (programming language)">C</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="/wiki/Cross-platform" class="mw-redirect" title="Cross-platform">Cross-platform</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="/wiki/Data_compression" title="Data compression">Data compression</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li><a href="/wiki/Public-domain_software" title="Public-domain software">Public domain</a></li><li>Some components <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GPL</a><sup id="cite_ref-licensing_1-0" class="reference"><a href="#cite_note-licensing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li></ul></div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://tukaani.org/xz/">tukaani<wbr />.org<wbr />/xz<wbr />/</a></span></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><table class="infobox"><caption class="infobox-title" style="padding-bottom: 0.15em;">.xz</caption><tbody><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><a href="/wiki/Filename_extension" title="Filename extension">Filename extension</a></th><td class="infobox-data" style="line-height: 1.35;"><style data-mw-deduplicate="TemplateStyles:r886049734">.mw-parser-output .monospaced{font-family:monospace,monospace}</style><div class="monospaced"> .xz</div></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><a href="/wiki/Media_type" title="Media type">Internet media type</a></th><td class="infobox-data" style="line-height: 1.35;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886049734"><div class="monospaced"> application/x-xz</div></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><a href="/wiki/File_format#Magic_number" title="File format">Magic number</a></th><td class="infobox-data" style="line-height: 1.35;"><code>FD 37 7A 58 5A 00</code></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Developed by</th><td class="infobox-data" style="line-height: 1.35;">Lasse Collin<br /><a href="/wiki/Igor_Pavlov_(programmer)" class="mw-redirect" title="Igor Pavlov (programmer)">Igor Pavlov</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Initial release</th><td class="infobox-data" style="line-height: 1.35;">January 14, 2009<span class="noprint">; 16 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2009-01-14</span>)</span></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Latest release</a></th><td class="infobox-data" style="line-height: 1.35;"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">1.2.1<br />April 8, 2024<span class="noprint">; 9 months ago</span><span style="display:none"> (<span class="bday dtstart published updated">2024-04-08</span>)</span> </div></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Type of format</th><td class="infobox-data" style="line-height: 1.35;"><a href="/wiki/Data_compression" title="Data compression">Data compression</a></td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><span class="nowrap"><a href="/wiki/Open_file_format" title="Open file format">Open format</a>?</span></th><td class="infobox-data" style="line-height: 1.35;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;"><span class="nowrap"><a href="/wiki/Open_standard#Comparison_of_definitions" title="Open standard">Free format</a>?</span></th><td class="infobox-data" style="line-height: 1.35;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="line-height: 1.2; padding-right: 0.65em;">Website</th><td class="infobox-data" style="line-height: 1.35;"><span class="url"><a rel="nofollow" class="external text" href="http://tukaani.org/xz/format.html">tukaani<wbr />.org<wbr />/xz<wbr />/format<wbr />.html</a></span></td></tr></tbody></table> <p><b>XZ Utils</b> (previously <b>LZMA Utils</b>) is a set of <a href="/wiki/Free_software" title="Free software">free software</a> <a href="/wiki/Command-line_interface" title="Command-line interface">command-line</a> <a href="/wiki/Lossless_compression" title="Lossless compression">lossless data compressors</a>, including the programs lzma and xz, for <a href="/wiki/Unix-like" title="Unix-like">Unix-like</a> operating systems and, from version 5.0 onwards, <a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>. For compression/decompression the <a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm" title="Lempel–Ziv–Markov chain algorithm">Lempel–Ziv–Markov chain algorithm</a> (LZMA) is used. XZ Utils started as a Unix port of <a href="/wiki/Igor_Pavlov_(programmer)" class="mw-redirect" title="Igor Pavlov (programmer)">Igor Pavlov</a>'s LZMA-<a href="/wiki/Software_development_kit" title="Software development kit">SDK</a> that has been adapted to fit seamlessly into Unix environments and their usual structure and behavior. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Features">Features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=1" title="Edit section: Features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>XZ Utils can compress and decompress the <i>xz</i> and <i>lzma</i> file formats. Since the LZMA format has been considered <a href="/wiki/Legacy_system" title="Legacy system">legacy</a>,<sup id="cite_ref-LZMA_Utils_Are_Legacy_2-0" class="reference"><a href="#cite_note-LZMA_Utils_Are_Legacy-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> XZ Utils by default compresses to xz. </p><p>In most cases, xz achieves higher compression rates than alternatives like <a href="/wiki/ZIP_(file_format)" title="ZIP (file format)">zip</a>,<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Gzip" title="Gzip">gzip</a> and <a href="/wiki/Bzip2" title="Bzip2">bzip2</a>. Decompression speed is higher than bzip2, but lower than gzip. Compression can be much slower than gzip, and is slower than bzip2 for high levels of compression, and is most useful when a compressed file will be used many times.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>XZ Utils consists of two major components: </p> <ul><li><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">xz</code>, the command-line compressor and decompressor (analogous to <a href="/wiki/Gzip" title="Gzip">gzip</a>)</li> <li><b>liblzma</b>, a <a href="/wiki/Library_(computing)" title="Library (computing)">software library</a> with an <a href="/wiki/Application_programming_interface" class="mw-redirect" title="Application programming interface">API</a> similar to <a href="/wiki/Zlib" title="Zlib">zlib</a></li></ul> <p>Various command shortcuts exist, such as <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">lzma</code> (for <span class="nowrap"><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">xz --format=lzma</code></span>), <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">unxz</code> (for <span class="nowrap"><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">xz --decompress</code></span>; analogous to <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">gunzip</code>) and <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">xzcat</code> (for <span class="nowrap"><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">unxz --stdout</code></span>; analogous to <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">zcat</code>). </p> <div class="mw-heading mw-heading2"><h2 id="Usage">Usage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=2" title="Edit section: Usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Both the behavior of the software and the properties of the file format have been designed to work similarly to those of the popular Unix compressing tools <a href="/wiki/Gzip" title="Gzip">gzip</a> and <a href="/wiki/Bzip2" title="Bzip2">bzip2</a>. </p><p>Just like gzip and bzip, xz and lzma can only compress single files (or data streams) as input. They cannot bundle multiple files into a single <a href="/wiki/File_archiver" title="File archiver">archive</a> –  to do this an archiving program is used first, such as <a href="/wiki/Tar_(computing)" title="Tar (computing)">tar</a>. </p><p>Compressing an archive: </p> <div class="mw-highlight mw-highlight-lang-bash mw-content-ltr" dir="ltr"><pre><span></span>xz<span class="w"> </span>my_archive.tar<span class="w"> </span><span class="c1"># results in my_archive.tar.xz</span> lzma<span class="w"> </span>my_archive.tar<span class="w"> </span><span class="c1"># results in my_archive.tar.lzma</span> </pre></div> <p>Decompressing the archive: </p> <div class="mw-highlight mw-highlight-lang-bash mw-content-ltr" dir="ltr"><pre><span></span>unxz<span class="w"> </span>my_archive.tar.xz<span class="w"> </span><span class="c1"># results in my_archive.tar</span> unlzma<span class="w"> </span>my_archive.tar.lzma<span class="w"> </span><span class="c1"># results in my_archive.tar</span> </pre></div> <p>Version 1.22 or greater of the <a href="/wiki/GNU" title="GNU">GNU</a> implementation of tar has transparent support for tarballs compressed with lzma and xz, using the <a href="/wiki/Command-line_argument#Command-line_switch" class="mw-redirect" title="Command-line argument">switches</a> <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">--xz</code> or <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">-J</code> for xz compression, and <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">--lzma</code> for LZMA compression. </p><p>Creating an archive and compressing it: </p> <div class="mw-highlight mw-highlight-lang-bash mw-content-ltr" dir="ltr"><pre><span></span>tar<span class="w"> </span>-c<span class="w"> </span>--xz<span class="w"> </span>-f<span class="w"> </span>my_archive.tar.xz<span class="w"> </span>/some_directory<span class="w"> </span><span class="c1"># results in my_archive.tar.xz</span> tar<span class="w"> </span>-c<span class="w"> </span>--lzma<span class="w"> </span>-f<span class="w"> </span>my_archive.tar.lzma<span class="w"> </span>/some_directory<span class="w"> </span><span class="c1"># results in my_archive.tar.lzma</span> </pre></div> <p>Decompressing the archive and extracting its contents: </p> <div class="mw-highlight mw-highlight-lang-bash mw-content-ltr" dir="ltr"><pre><span></span>tar<span class="w"> </span>-x<span class="w"> </span>--xz<span class="w"> </span>-f<span class="w"> </span>my_archive.tar.xz<span class="w"> </span><span class="c1"># results in /some_directory</span> tar<span class="w"> </span>-x<span class="w"> </span>--lzma<span class="w"> </span>-f<span class="w"> </span>my_archive.tar.lzma<span class="w"> </span><span class="c1"># results in /some_directory</span> </pre></div> <p>Single-letter tar example for archive with compress and decompress with extract using <a href="/wiki/Tar_(computing)#Suffixes_for_compressed_files" title="Tar (computing)">short suffix</a>: </p> <div class="mw-highlight mw-highlight-lang-bash mw-content-ltr" dir="ltr"><pre><span></span>tar<span class="w"> </span>cJf<span class="w"> </span>keep.txz<span class="w"> </span>keep<span class="w"> </span><span class="c1"># archive then compress the directory ./keep/ into the file ./keep.txz</span> tar<span class="w"> </span>xJf<span class="w"> </span>keep.txz<span class="w"> </span><span class="c1"># decompress then extract the file ./keep.txz creating the directory ./keep/</span> </pre></div> <p>xz has supported multi-threaded compression (with the <code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">-T</code> flag)<sup id="cite_ref-man.cx_6-0" class="reference"><a href="#cite_note-man.cx-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> since 2014, version 5.2.0;<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> since version 5.4.0 threaded decompression has been implemented. Threaded decompression requires multiple compressed blocks within a stream which are created by the threaded compression interface. The number of threads can be less than defined if the file is not big enough for threading with the given settings or if using more threads would exceed the memory usage limit.<sup id="cite_ref-man.cx_6-1" class="reference"><a href="#cite_note-man.cx-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="The_xz_format">The xz format</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=3" title="Edit section: The xz format"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The xz format improves on lzma by allowing for preprocessing filters. The exact filters used are similar to those used in <a href="/wiki/7z#Pre-processing_filters" title="7z">7z</a>, as 7z's filters are available in the public domain via the LZMA SDK. </p> <div class="mw-heading mw-heading2"><h2 id="Development_and_adoption">Development and adoption</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=4" title="Edit section: Development and adoption"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Development of XZ Utils took place within the Tukaani Project, a small group of developers who once maintained a <a href="/wiki/Linux_distribution" title="Linux distribution">Linux distribution</a> based on <a href="/wiki/Slackware" title="Slackware">Slackware</a>. The chosen name "XZ" is not an abbreviation but instead appears to be a random given name for the data compressors, as there is no mention anywhere in the official specification on the meaning of "XZ".<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> The .xz file format specification version 1.0.0 was officially released in January 2009.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p><p>All of the <a href="/wiki/Source_code" title="Source code">source code</a> for xz and liblzma has been released into the <a href="/wiki/Public_domain" title="Public domain">public domain</a>. The XZ Utils source distribution additionally includes some optional scripts and an example program that are subject to various versions of the <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU General Public License</a> (GPL).<sup id="cite_ref-licensing_1-1" class="reference"><a href="#cite_note-licensing-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The resulting software xz and liblzma binaries are public domain, unless the optional LGPL <a href="/wiki/Getopt" title="Getopt">getopt</a> implementation is incorporated.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>Binaries are available for <a href="/wiki/FreeBSD" title="FreeBSD">FreeBSD</a>, <a href="/wiki/NetBSD" title="NetBSD">NetBSD</a>, <a href="/wiki/Linux" title="Linux">Linux</a> systems, <a href="/wiki/Microsoft_Windows" title="Microsoft Windows">Microsoft Windows</a>, and <a href="/wiki/FreeDOS" title="FreeDOS">FreeDOS</a>. A number of <a href="/wiki/Linux_distribution" title="Linux distribution">Linux distributions</a>, including <a href="/wiki/Fedora_(operating_system)" class="mw-redirect" title="Fedora (operating system)">Fedora</a>, <a href="/wiki/Slackware" title="Slackware">Slackware</a>, <a href="/wiki/Ubuntu_(operating_system)" class="mw-redirect" title="Ubuntu (operating system)">Ubuntu</a>, and <a href="/wiki/Debian" title="Debian">Debian</a> use xz for compressing their software packages. <a href="/wiki/Arch_Linux" title="Arch Linux">Arch Linux</a> previously used xz to compress packages,<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> but as of December 27, 2019, packages are compressed with <a href="/wiki/Zstandard" class="mw-redirect" title="Zstandard">Zstandard</a> compression.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Fedora Linux also switched to compressing its RPM packages with Zstandard with Fedora Linux 31.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/GNU" title="GNU">GNU</a> FTP archive also uses xz. </p> <div class="mw-heading mw-heading2"><h2 id="Backdoor_incident">Backdoor incident</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=5" title="Edit section: Backdoor incident"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/XZ_Utils_backdoor" title="XZ Utils backdoor">XZ Utils backdoor</a></div> <p>On 29 March 2024, Andres Freund, a <a href="/wiki/PostgreSQL" title="PostgreSQL">PostgreSQL</a> developer working at <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a>, announced that he had found a backdoor in XZ Utils, impacting versions 5.6.0 and 5.6.1. Compressed test files had been added to the code for setting up the <a href="/wiki/Backdoor_(computing)" title="Backdoor (computing)">backdoor</a> via additions to the <a href="/wiki/Configure_script" title="Configure script">configure script</a> in the <a href="/wiki/Tar_(computing)" title="Tar (computing)">tar files</a>. He started his investigation because "After observing a few odd symptoms around liblzma (part of the xz package)" as he found that <a href="/wiki/Secure_Shell" title="Secure Shell">ssh</a> logins using <code><a href="/wiki/OpenSSH#Development" title="OpenSSH">sshd</a></code> were "taking a lot of <a href="/wiki/CPU" class="mw-redirect" title="CPU">CPU</a>, <a href="/wiki/Valgrind" title="Valgrind">valgrind</a> errors".<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> The vulnerability received a <a href="/wiki/Common_Vulnerability_Scoring_System" title="Common Vulnerability Scoring System">Common Vulnerability Scoring System</a> (CVSS) score of 10 (the highest).<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-licensing-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-licensing_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-licensing_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://tukaani.org/xz/">Licensing</a> on tukaani.org "The most interesting parts of XZ Utils (e.g. liblzma) are in the public domain. You can do whatever you want with the public domain parts. Some parts of XZ Utils (e.g. build system and some utilities) are under different free software licenses such as GNU LGPLv2.1, GNU GPLv2, or GNU GPLv3."</span> </li> <li id="cite_note-LZMA_Utils_Are_Legacy-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-LZMA_Utils_Are_Legacy_2-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://tukaani.org/lzma/"><i>LZMA Util</i></a><span class="reference-accessdate">, retrieved <span class="nowrap">2011-01-25</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=LZMA+Util&rft_id=https%3A%2F%2Ftukaani.org%2Flzma%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVivek" class="citation web cs1">Vivek, Gite. <a rel="nofollow" class="external text" href="https://www.cyberciti.biz/faq/compress-the-whole-directory-using-xz-and-tar/">"How to compress the whole directory using xz and tar in Linux"</a>. <q>For instance, I compressed a directory having 37M size using both xz and zip. The zip file size was 31M, while the xz file was 16M after compression</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=How+to+compress+the+whole+directory+using+xz+and+tar+in+Linux&rft.aulast=Vivek&rft.aufirst=Gite&rft_id=https%3A%2F%2Fwww.cyberciti.biz%2Ffaq%2Fcompress-the-whole-directory-using-xz-and-tar%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHenry-Stocker2017" class="citation web cs1">Henry-Stocker, Sandra (2017-12-12). <a rel="nofollow" class="external text" href="https://www.networkworld.com/article/3240938/how-to-squeeze-the-most-out-of-linux-file-compression.html">"How to squeeze the most out of Linux file compression"</a>. <i>Network World</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2020-02-09</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Network+World&rft.atitle=How+to+squeeze+the+most+out+of+Linux+file+compression&rft.date=2017-12-12&rft.aulast=Henry-Stocker&rft.aufirst=Sandra&rft_id=https%3A%2F%2Fwww.networkworld.com%2Farticle%2F3240938%2Fhow-to-squeeze-the-most-out-of-linux-file-compression.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.rootusers.com/gzip-vs-bzip2-vs-xz-performance-comparison/">"Gzip vs Bzip2 vs XZ Performance Comparison"</a>. <i>RootUsers</i>. 2015-09-16<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-02-09</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=RootUsers&rft.atitle=Gzip+vs+Bzip2+vs+XZ+Performance+Comparison&rft.date=2015-09-16&rft_id=https%3A%2F%2Fwww.rootusers.com%2Fgzip-vs-bzip2-vs-xz-performance-comparison%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-man.cx-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-man.cx_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-man.cx_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://man.cx/xz">"xz, unxz, xzcat, lzma, unlzma, lzcat – Compress or decompress .xz and .lzma files"</a>. <i>Linux Manpages Online</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Linux+Manpages+Online&rft.atitle=xz%2C+unxz%2C+xzcat%2C+lzma%2C+unlzma%2C+lzcat+%E2%80%93+Compress+or+decompress+.xz+and+.lzma+files&rft_id=https%3A%2F%2Fman.cx%2Fxz&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://git.tukaani.org/?p=xz.git;a=blob;f=NEWS;hb=HEAD">"XZ Utils Release Notes"</a>. <i>git.tukaani.org</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=git.tukaani.org&rft.atitle=XZ+Utils+Release+Notes&rft_id=https%3A%2F%2Fgit.tukaani.org%2F%3Fp%3Dxz.git%3Ba%3Dblob%3Bf%3DNEWS%3Bhb%3DHEAD&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://tukaani.org/xz/xz-file-format-1.0.0.txt">"Official XZ Specification"</a>. <i>tukaani.org</i>. Lasse Collin<span class="reference-accessdate">. Retrieved <span class="nowrap">8 October</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=tukaani.org&rft.atitle=Official+XZ+Specification&rft_id=https%3A%2F%2Ftukaani.org%2Fxz%2Fxz-file-format-1.0.0.txt&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLasse_Collin2009" class="citation web cs1">Lasse Collin (2009-01-28). <a rel="nofollow" class="external text" href="https://git.tukaani.org/?p=xz.git;a=commit;h=982da7ed314398420c38bf154a8f759d5f18b480">"News: The .xz file format specification version 1.0.0 is now officially released"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=News%3A+The+.xz+file+format+specification+version+1.0.0+is+now+officially+released&rft.date=2009-01-28&rft.au=Lasse+Collin&rft_id=https%3A%2F%2Fgit.tukaani.org%2F%3Fp%3Dxz.git%3Ba%3Dcommit%3Bh%3D982da7ed314398420c38bf154a8f759d5f18b480&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/gpl-faq.en.html#WhatCaseIsOutputGPL">"In what cases is the output of a GPL program covered by the GPL too?"</a>. <i>GNU.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">21 August</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GNU.org&rft.atitle=In+what+cases+is+the+output+of+a+GPL+program+covered+by+the+GPL+too%3F&rft_id=https%3A%2F%2Fwww.gnu.org%2Flicenses%2Fgpl-faq.en.html%23WhatCaseIsOutputGPL&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPierre_Schmitz2010" class="citation web cs1">Pierre Schmitz (2010-03-23). <a rel="nofollow" class="external text" href="https://www.archlinux.org/news/switching-to-xz-compression-for-new-packages/">"News: Switching to xz compression for new packages"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=News%3A+Switching+to+xz+compression+for+new+packages&rft.date=2010-03-23&rft.au=Pierre+Schmitz&rft_id=https%3A%2F%2Fwww.archlinux.org%2Fnews%2Fswitching-to-xz-compression-for-new-packages%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.archlinux.org/news/now-using-zstandard-instead-of-xz-for-package-compression/">"Arch Linux - News: Now using Zstandard instead of xz for package compression"</a>. <i>www.archlinux.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2020-01-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.archlinux.org&rft.atitle=Arch+Linux+-+News%3A+Now+using+Zstandard+instead+of+xz+for+package+compression&rft_id=https%3A%2F%2Fwww.archlinux.org%2Fnews%2Fnow-using-zstandard-instead-of-xz-for-package-compression%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMach" class="citation web cs1">Mach, Daniel. <a rel="nofollow" class="external text" href="https://fedoraproject.org/wiki/Changes/Switch_RPMs_to_zstd_compression">"Changes/Switch RPMs to zstd compression"</a>. <i>Fedora Project Wiki</i><span class="reference-accessdate">. Retrieved <span class="nowrap">30 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Fedora+Project+Wiki&rft.atitle=Changes%2FSwitch+RPMs+to+zstd+compression&rft.aulast=Mach&rft.aufirst=Daniel&rft_id=https%3A%2F%2Ffedoraproject.org%2Fwiki%2FChanges%2FSwitch_RPMs_to_zstd_compression&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.openwall.com/lists/oss-security/2024/03/29/4">"oss-security - backdoor in upstream xz/liblzma leading to ssh server compromise"</a>. <i>www.openwall.com</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-04-08</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.openwall.com&rft.atitle=oss-security+-+backdoor+in+upstream+xz%2Fliblzma+leading+to+ssh+server+compromise&rft_id=https%3A%2F%2Fwww.openwall.com%2Flists%2Foss-security%2F2024%2F03%2F29%2F4&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://lwn.net/Articles/967194/">"A backdoor in xz"</a>. <i><a href="/wiki/LWN.net" title="LWN.net">LWN.net</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-03-30</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=LWN.net&rft.atitle=A+backdoor+in+xz&rft_id=https%3A%2F%2Flwn.net%2FArticles%2F967194%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AXZ+Utils" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=XZ_Utils&action=edit&section=7" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://sourceforge.net/projects/lzmautils/">XZ Utils</a> on <a href="/wiki/SourceForge" title="SourceForge">SourceForge</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist 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.navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Compression_software" title="Template:Compression software"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Compression_software" title="Template talk:Compression software"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Compression_software" title="Special:EditPage/Template:Compression software"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Data_compression_software609" style="font-size:114%;margin:0 4em"><a href="/wiki/Data_compression" title="Data compression">Data compression</a> software</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Comparison_of_file_archivers" title="Comparison of file archivers">Archivers</a> with<br /> compression<br /> <span style="font-size:85%;">(<a href="/wiki/Comparison_of_file_archivers" title="Comparison of file archivers">comparison</a>)</span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em"><a href="/wiki/Free_software" title="Free software">Free software</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/7-Zip" title="7-Zip">7-Zip</a></li> <li><a href="/wiki/Ark_(software)" title="Ark (software)">Ark</a></li> <li><a href="/wiki/Haiku_Applications#Expander" class="mw-redirect" title="Haiku Applications">Expander</a></li> <li><a href="/wiki/FreeArc" title="FreeArc">FreeArc</a></li> <li><a href="/wiki/GNOME_Archive_Manager" class="mw-redirect" title="GNOME Archive Manager">GNOME Archive Manager</a></li> <li><a href="/wiki/Info-ZIP" title="Info-ZIP">Info-ZIP</a></li> <li><a href="/wiki/KGB_Archiver" title="KGB Archiver">KGB Archiver</a></li> <li><a href="/wiki/PAQ" title="PAQ">PAQ</a></li> <li><a href="/wiki/Pax_(command)" title="Pax (command)">pax</a></li> <li><a href="/wiki/PeaZip" title="PeaZip">PeaZip</a></li> <li><a href="/wiki/XAD_(software)" title="XAD (software)">XAD</a> (decompression only)</li> <li><a href="/wiki/Xarchiver" title="Xarchiver">Xarchiver</a></li> <li><a href="/wiki/Zipeg" title="Zipeg">Zipeg</a></li> <li><a href="/wiki/ZPAQ" title="ZPAQ">ZPAQ</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em"><a href="/wiki/Freeware" title="Freeware">Freeware</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Filzip" title="Filzip">Filzip</a></li> <li><a href="/wiki/LHA_(file_format)" title="LHA (file format)">LHA</a></li> <li><a href="/wiki/Lhasa_(computing)" title="Lhasa (computing)">Lhasa</a> (decompression only)</li> <li><a href="/wiki/StuffIt_Expander" title="StuffIt Expander">StuffIt Expander</a> (decompression only)</li> <li><a href="/wiki/The_Unarchiver" title="The Unarchiver">The Unarchiver</a> (decompression only)</li> <li><a href="/wiki/TUGZip" title="TUGZip">TUGZip</a></li> <li><a href="/wiki/ZipGenius" title="ZipGenius">ZipGenius</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em"><a href="/wiki/Commercial_software" title="Commercial software">Commercial</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ARC_(file_format)" title="ARC (file format)">ARC</a></li> <li><a href="/wiki/ALZip" title="ALZip">ALZip</a></li> <li><a href="/wiki/Archive_Utility" class="mw-redirect" title="Archive Utility">Archive Utility</a></li> <li><a href="/wiki/ARJ" title="ARJ">ARJ</a></li> <li><a href="/wiki/BetterZip" title="BetterZip">BetterZip</a></li> <li><a href="/wiki/MacBinary" title="MacBinary">MacBinary</a></li> <li><a href="/wiki/PKZIP" title="PKZIP">PKZIP/SecureZIP</a></li> <li><a href="/wiki/PowerArchiver" title="PowerArchiver">PowerArchiver</a></li> <li><a href="/wiki/StuffIt" title="StuffIt">StuffIt</a></li> <li><a href="/wiki/WinAce" title="WinAce">WinAce</a></li> <li><a href="/wiki/WinRAR" title="WinRAR">WinRAR</a></li> <li><a href="/wiki/WinZip" title="WinZip">WinZip</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Non-archiving<br />compressors</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em">Generic</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bzip2" title="Bzip2">bzip2</a></li> <li><a href="/wiki/Compress_(software)" title="Compress (software)">compress</a></li> <li><a href="/wiki/Gzip" title="Gzip">gzip</a></li> <li><a href="/wiki/Lzip" title="Lzip">lzip</a></li> <li><a href="/wiki/Lzop" title="Lzop">lzop</a></li> <li><a href="/wiki/Pack_(software)" title="Pack (software)">pack</a></li> <li><a href="/wiki/Rzip" title="Rzip">rzip</a></li> <li><a href="/wiki/Snappy_(compression)" title="Snappy (compression)">Snappy</a></li> <li><a class="mw-selflink selflink">XZ Utils</a></li> <li><a href="/wiki/Zstd" title="Zstd">zstd</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em"><a href="/wiki/Executable_compression" title="Executable compression">For code</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"><a href="/wiki/UPX" title="UPX">UPX</a></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Data_compression#Audio" title="Data compression">Audio<br /> compression</a><br /> <span style="font-size:85%;">(<a href="/wiki/Comparison_of_audio_coding_formats" title="Comparison of audio coding formats">comparison</a>)</span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em;padding-top:5px; padding-bottom:5px"><a href="/wiki/Lossy_compression" title="Lossy compression">Lossy</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Advanced_Audio_Coding" title="Advanced Audio Coding">AAC</a> <ul><li><a href="/wiki/Fraunhofer_FDK_AAC" title="Fraunhofer FDK AAC">Fraunhofer FDK AAC</a></li> <li><a href="/wiki/Nero_AAC_Codec" title="Nero AAC Codec">Nero AAC Codec</a></li> <li><a href="/wiki/FAAC" title="FAAC">FAAC</a></li></ul></li> <li><a href="/wiki/Helix_(multimedia_project)" title="Helix (multimedia project)">Helix DNA Producer</a></li> <li><a href="/wiki/MP3" title="MP3">MP3</a> <ul><li><a href="/wiki/L3enc" title="L3enc">l3enc</a></li> <li><a href="/wiki/LAME" title="LAME">LAME</a></li></ul></li> <li><a href="/wiki/TooLAME" title="TooLAME">TooLAME</a></li> <li><a href="/wiki/Libavcodec" title="Libavcodec">libavcodec</a></li> <li><a href="/wiki/CELT" title="CELT">libcelt</a></li> <li><a href="/wiki/Opus_(audio_format)" title="Opus (audio format)">libopus</a></li> <li><a href="/wiki/Speex" title="Speex">libspeex</a></li> <li><a href="/wiki/Musepack" title="Musepack">Musepack</a></li> <li><a href="/wiki/Vorbis" title="Vorbis">libvorbis</a></li> <li><a href="/wiki/Windows_Media_Encoder" title="Windows Media Encoder">Windows Media Encoder</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em;padding-top:5px; padding-bottom:5px"><a href="/wiki/Lossless_compression" title="Lossless compression">Lossless</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apple_Lossless_Audio_Codec" title="Apple Lossless Audio Codec">ALAC</a></li> <li><a href="/wiki/FLAC" title="FLAC">FLAC</a></li> <li><a href="/wiki/Libavcodec" title="Libavcodec">libavcodec</a></li> <li><a href="/wiki/Monkey%27s_Audio" title="Monkey's Audio">Monkey's Audio</a></li> <li><a href="/wiki/Audio_Lossless_Coding" title="Audio Lossless Coding">mp4als</a></li> <li><a href="/wiki/OptimFROG" title="OptimFROG">OptimFROG</a></li> <li><a href="/wiki/Shorten_(codec)" title="Shorten (codec)">Shorten</a></li> <li><a href="/wiki/WavPack" title="WavPack">WavPack</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Data_compression#Video" title="Data compression">Video<br /> compression</a><br /> <span style="font-size:85%;">(<a href="/wiki/Comparison_of_video_codecs" title="Comparison of video codecs">comparison</a>)</span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em"><a href="/wiki/Lossy_compression" title="Lossy compression">Lossy</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/MPEG-4_Part_2" title="MPEG-4 Part 2">MPEG-4 ASP</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/3ivx" title="3ivx">3ivx</a></li> <li><a href="/wiki/DivX" title="DivX">DivX</a></li> <li><a href="/wiki/Nero_Digital" title="Nero Digital">Nero Digital</a></li> <li><a href="/wiki/FFmpeg" title="FFmpeg">FFmpeg</a></li> <li><a href="/wiki/HDX4" title="HDX4">HDX4</a></li> <li><a href="/wiki/Xvid" title="Xvid">Xvid</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Advanced_Video_Coding" title="Advanced Video Coding">H.264</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CoreAVC" title="CoreAVC">CoreAVC</a></li> <li>Blu-code</li> <li><a href="/wiki/DivX" title="DivX">DivX</a></li> <li><a href="/wiki/FFmpeg" title="FFmpeg">FFmpeg</a></li> <li><a href="/wiki/Nero_Digital" title="Nero Digital">Nero Digital</a></li> <li><a href="/wiki/OpenH264" title="OpenH264">OpenH264</a></li> <li><a href="/wiki/QuickTime" title="QuickTime">QuickTime</a></li> <li><a href="/wiki/X264" title="X264">x264</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/High_Efficiency_Video_Coding" title="High Efficiency Video Coding">HEVC</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DivX" title="DivX">DivX</a></li> <li><a href="/wiki/X265" title="X265">x265</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Others</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CineForm" title="CineForm">CineForm</a></li> <li><a href="/wiki/Cinepak" title="Cinepak">Cinepak</a></li> <li><a href="/wiki/Daala" title="Daala">Daala</a></li> <li><a href="/wiki/Avid_DNxHD" title="Avid DNxHD">DNxHD</a></li> <li><a href="/wiki/Helix_(multimedia_project)" title="Helix (multimedia project)">Helix DNA Producer</a></li> <li><a href="/wiki/Indeo" title="Indeo">Indeo</a></li> <li><a href="/wiki/Libavcodec" title="Libavcodec">libavcodec</a></li> <li><a href="/wiki/Dirac_(video_compression_format)" title="Dirac (video compression format)">Schrödinger (Dirac)</a></li> <li><a href="/wiki/Smart_Bitrate_Control" title="Smart Bitrate Control">SBC</a></li> <li><a href="/wiki/Sorenson_codec" class="mw-redirect" title="Sorenson codec">Sorenson</a></li> <li><a href="/wiki/VP7" class="mw-redirect" title="VP7">VP7</a></li> <li><a href="/wiki/Theora" title="Theora">libtheora</a></li> <li><a href="/wiki/Libvpx" title="Libvpx">libvpx</a></li> <li><a href="/wiki/Windows_Media_Encoder" title="Windows Media Encoder">Windows Media Encoder</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em"><a href="/wiki/Lossless_compression" title="Lossless compression">Lossless</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/FFV1" title="FFV1">FFV1</a></li> <li><a href="/wiki/Huffyuv" title="Huffyuv">Huffyuv</a></li> <li><a href="/wiki/Lagarith" title="Lagarith">Lagarith</a></li> <li><a href="/wiki/MSU_Lossless_Video_Codec" title="MSU Lossless Video Codec">MSU Lossless</a></li> <li><a href="/wiki/YULS" title="YULS">YULS</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li>See also: <a href="/wiki/Template:Compression_methods" title="Template:Compression methods">compression methods</a> and <a href="/wiki/Template:Compression_formats" title="Template:Compression formats">compression formats</a></li></ul> </div></td></tr></tbody></table></div><div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Archive_formats518" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Archive_formats" title="Template:Archive formats"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Archive_formats" title="Template talk:Archive formats"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Archive_formats" title="Special:EditPage/Template:Archive formats"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Archive_formats518" style="font-size:114%;margin:0 4em"><a href="/wiki/Archive_format" class="mw-redirect" title="Archive format">Archive formats</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Archiving only</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ar_(Unix)" title="Ar (Unix)">ar</a></li> <li><a href="/wiki/Cpio" title="Cpio">cpio</a></li> <li><a href="/wiki/Shar_(file_format)" title="Shar (file format)">shar</a></li> <li><a href="/wiki/Tar_(computing)" title="Tar (computing)">tar</a></li> <li><a href="/wiki/LBR_(file_format)" title="LBR (file format)">LBR</a></li> <li><a href="/wiki/Doom_modding" title="Doom modding">WAD</a></li> <li><a href="/wiki/WARC_(file_format)" title="WARC (file format)">WARC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Compression only</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Brotli" title="Brotli">Brotli</a></li> <li><a href="/wiki/Bzip2" title="Bzip2">bzip2</a></li> <li><a href="/wiki/Compress_(software)" title="Compress (software)">compress</a></li> <li><a href="/wiki/Gzip" title="Gzip">gzip</a></li> <li><a href="/wiki/Zopfli" title="Zopfli">Zopfli</a></li> <li><a href="/wiki/Lempel%E2%80%93Ziv%E2%80%93Markov_chain_algorithm" title="Lempel–Ziv–Markov chain algorithm">LZMA</a></li> <li><a href="/wiki/LZ4_(compression_algorithm)" title="LZ4 (compression algorithm)">LZ4</a></li> <li><a href="/wiki/Lzip" title="Lzip">lzip</a></li> <li><a href="/wiki/Lzop" title="Lzop">lzop</a></li> <li><a href="/wiki/SQ_(program)" title="SQ (program)">SQ</a></li> <li><a class="mw-selflink selflink">xz</a></li> <li><a href="/wiki/Zstd" title="Zstd">Zstandard</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Archiving and compression</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/7z" title="7z">7z</a></li> <li><a href="/wiki/ACE_(compressed_file_format)" title="ACE (compressed file format)">ACE</a></li> <li><a href="/wiki/ARC_(file_format)" title="ARC (file format)">ARC</a></li> <li><a href="/wiki/ARJ" title="ARJ">ARJ</a></li> <li><a href="/wiki/B1_(file_format)" title="B1 (file format)">B1</a></li> <li><a href="/wiki/Cabinet_(file_format)" title="Cabinet (file format)">Cabinet</a></li> <li><a href="/wiki/CFS_(file_format)" title="CFS (file format)">cfs</a></li> <li><a href="/wiki/Compact_Pro" title="Compact Pro">cpt</a></li> <li><a href="/wiki/Dar_(disk_archiver)" title="Dar (disk archiver)">dar</a></li> <li>DGCA</li> <li><a href="/wiki/Apple_Disk_Image" title="Apple Disk Image">.dmg</a></li> <li><a href="/wiki/ALZip" title="ALZip">.egg</a></li> <li><a href="/wiki/KGB_Archiver" title="KGB Archiver">kgb</a></li> <li><a href="/wiki/LHA_(file_format)" title="LHA (file format)">LHA</a></li> <li><a href="/wiki/Lrzip" class="mw-redirect" title="Lrzip">lrzip</a></li> <li><a href="/wiki/LZX" title="LZX">LZX</a></li> <li><a href="/wiki/MPQ_(file_format)" class="mw-redirect" title="MPQ (file format)">MPQ</a></li> <li><a href="/wiki/PeaZip#Native_archive_format" title="PeaZip">PEA</a></li> <li><a href="/wiki/RAR_(file_format)" title="RAR (file format)">RAR</a></li> <li><a href="/wiki/Rzip" title="Rzip">rzip</a></li> <li><a href="/wiki/StuffIt" title="StuffIt">sit</a> <ul><li><a href="/wiki/StuffIt" title="StuffIt">sitx</a></li></ul></li> <li>SQX</li> <li><a href="/wiki/PAQ" title="PAQ">UDA</a></li> <li><a href="/wiki/Xar_(archiver)" title="Xar (archiver)">Xar</a></li> <li><a href="/wiki/Zoo_(file_format)" title="Zoo (file format)">zoo</a></li> <li><a href="/wiki/ZIP_(file_format)" title="ZIP (file format)">ZIP</a></li> <li><a href="/wiki/ZPAQ" title="ZPAQ">ZPAQ</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Package_format" title="Package format">Software packaging and distribution</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apk_(file_format)" title="Apk (file format)">apk</a></li> <li><a href="/wiki/App_(file_format)" title="App (file format)">App</a></li> <li><a href="/wiki/APPX" class="mw-redirect" title="APPX">APPX</a></li> <li><a href="/wiki/Deb_(file_format)" title="Deb (file format)">deb</a></li> <li><a href="/wiki/App_(file_format)" title="App (file format)">HAP</a></li> <li><a href="/wiki/.ipa" title=".ipa">ipa</a></li> <li><a href="/wiki/JAR_(file_format)" title="JAR (file format)">JAR</a> <ul><li><a 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0.25em"> <ul><li><a href="/wiki/Open_eBook" title="Open eBook">OEB Package Format</a></li> <li><a href="/wiki/EPUB" title="EPUB">OEBPS Container Format</a></li> <li><a href="/wiki/Open_Packaging_Conventions" title="Open Packaging Conventions">Open Packaging Conventions</a></li> <li><a href="/wiki/PAQ" title="PAQ">PAQ</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_na_class.svg" class="mw-file-description" title="Non-article page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/6/6a/Symbol_na_class.svg/16px-Symbol_na_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/6/6a/Symbol_na_class.svg/23px-Symbol_na_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/6/6a/Symbol_na_class.svg/31px-Symbol_na_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a 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