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</style><a href="index.html">Index </a>·
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<a href="systemd.directives.html">Directives </a>·
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<a href="../python-systemd/index.html">Python </a>·
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<a href="../libudev/index.html">libudev </a>·
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 204</span><hr><div class="refentry"><a name="systemd-machine-id-setup"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-machine-id-setup — Initialize the machine ID in /etc/machine-id</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">systemd-machine-id-setup</code> </p></div></div><div class="refsect1"><a name="idm259786283648"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><span class="command"><strong>systemd-machine-id-setup</strong></span> may
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be used by system installer tools to initialize the
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machine ID stored in
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<code class="filename">/etc/machine-id</code> at install time
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with a randomly generated ID. See
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<a href="machine-id.html"><span class="citerefentry"><span class="refentrytitle">machine-id</span>(5)</span></a>
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for more information about this file.</p><p>This tool will execute no operation if
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<code class="filename">/etc/machine-id</code> is already
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initialized.</p><p>If a valid D-Bus machine ID is already
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configured for the system the D-Bus machine ID is
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copied and used to initialize the machine ID in
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<code class="filename">/etc/machine-id</code>.</p><p>If run inside a KVM virtual machine and a UUID
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is passed via the <code class="option">-uuid</code> option this
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UUID is used to initialize the machine ID instead of a
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randomly generated one. The caller must ensure that the
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UUID passed is sufficiently unique and is different
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for every booted instanced of the VM.</p><p>Similar, if run inside a Linux container
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environment and a UUID is set for the container this
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is used to initialize the machine ID. For details see
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the documentation of the <a class="ulink" href="http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface" target="_top">Container
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Interface</a>.</p></div><div class="refsect1"><a name="idm259782726112"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><p>The following options are understood:</p><div class="variablelist"><dl class="variablelist"><dt id="-h"><span class="term"><code class="option">-h</code>, </span><span class="term"><code class="option">--help</code></span><a class="headerlink" title="Permalink to this term" href="#-h">¶</a></dt><dd><p>Prints a short help
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text and exits.</p></dd><dt id="--version"><span class="term"><code class="option">--version</code></span><a class="headerlink" title="Permalink to this term" href="#--version">¶</a></dt><dd><p>Prints a short version
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string and exits.</p></dd></dl></div></div><div class="refsect1"><a name="idm259782721056"></a><h2 id="Exit status">Exit status<a class="headerlink" title="Permalink to this headline" href="#Exit%20status">¶</a></h2><p>On success 0 is returned, a non-zero failure
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code otherwise.</p></div><div class="refsect1"><a name="idm259782719872"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
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<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
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<a href="machine-id.html"><span class="citerefentry"><span class="refentrytitle">machine-id</span>(5)</span></a>,
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<a href="dbus-uuidgen.html"><span class="citerefentry"><span class="refentrytitle">dbus-uuidgen</span>(1)</span></a>
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</p></div></div></body></html>
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