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| e735f4d4 MP |
22 | <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 219</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="idm139654011245424"></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 be used by |
| 23 | system installer tools to initialize the machine ID stored in | |
| 24 | <code class="filename">/etc/machine-id</code> at install time with a | |
| 25 | randomly generated ID. See | |
| 26 | <a href="machine-id.html"><span class="citerefentry"><span class="refentrytitle">machine-id</span>(5)</span></a> | |
| 27 | for more information about this file.</p><p>This tool will execute no operation if | |
| 28 | <code class="filename">/etc/machine-id</code> is already | |
| 29 | initialized.</p><p>If a valid D-Bus machine ID is already configured for the | |
| 30 | system, the D-Bus machine ID is copied and used to initialize the | |
| 31 | machine ID in <code class="filename">/etc/machine-id</code>.</p><p>If run inside a KVM virtual machine and a UUID is passed via | |
| 32 | the <code class="option">-uuid</code> option, this UUID is used to initialize | |
| 33 | the machine ID instead of a randomly generated one. The caller | |
| 34 | must ensure that the UUID passed is sufficiently unique and is | |
| 35 | different for every booted instanced of the VM.</p><p>Similar, if run inside a Linux container environment and a | |
| 36 | UUID is set for the container this is used to initialize the | |
| 37 | machine ID. For details see the documentation of the <a class="ulink" href="http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface" target="_top">Container | |
| 38 | Interface</a>.</p><p>Use | |
| 39 | <a href="systemd-firstboot.html"><span class="citerefentry"><span class="refentrytitle">systemd-firstboot</span>(1)</span></a> | |
| 40 | to initialize the machine ID on mounted (but not booted) system | |
| 41 | images.</p></div><div class="refsect1"><a name="idm139654011236336"></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="--root=root"><span class="term"><code class="option">--root=<em class="replaceable"><code>root</code></em></code></span><a class="headerlink" title="Permalink to this term" href="#--root=root">¶</a></dt><dd><p>Takes a directory path as an argument. All | |
| 42 | paths will be prefixed with the given alternate | |
| 43 | <em class="replaceable"><code>root</code></em> path, including config search | |
| 44 | paths. </p></dd><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><a name="help-text"></a>Print a short help text and exit. | |
| 45 | </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><a name="version-text"></a>Print a short version string and exit.</p></dd></dl></div></div><div class="refsect1"><a name="idm139654011230848"></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 code | |
| 46 | otherwise.</p></div><div class="refsect1"><a name="idm139654015131808"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> | |
| 47 | <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, | |
| 48 | <a href="machine-id.html"><span class="citerefentry"><span class="refentrytitle">machine-id</span>(5)</span></a>, | |
| 49 | <a href="dbus-uuidgen.html"><span class="citerefentry"><span class="refentrytitle">dbus-uuidgen</span>(1)</span></a>, | |
| 50 | <a href="systemd-firstboot.html"><span class="citerefentry"><span class="refentrytitle">systemd-firstboot</span>(1)</span></a> | |
| 51 | </p></div></div></body></html> |