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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 217</span><hr><div class="refentry"><a name="systemd-detect-virt"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-detect-virt — Detect execution in a virtualized environment</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">systemd-detect-virt [OPTIONS...]</code> </p></div></div><div class="refsect1"><a name="idm214177448704"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><span class="command"><strong>systemd-detect-virt</strong></span> detects
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execution in a virtualized environment. It identifies
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the virtualization technology and can distinguish full
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VM virtualization from container
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virtualization. <code class="filename">systemd-detect-virt</code>
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exits with a return value of 0 (success) if a
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virtualization technology is detected, and non-zero
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(error) otherwise. By default any type of
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virtualization is detected, and the options
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<code class="option">--container</code> and <code class="option">--vm</code>
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can be used to limit what types of virtualization are
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detected.</p><p>When executed without <code class="option">--quiet</code>
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will print a short identifier for the detected
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virtualization technology. The following technologies
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are currently identified:</p><div class="table"><a name="idm214177443872"></a><p class="title"><b>Table 1. Known virtualization technologies (both
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VM, i.e. full hardware virtualization,
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and container, i.e. shared kernel virtualization)</b></p><div class="table-contents"><table summary="Known virtualization technologies (both
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VM, i.e. full hardware virtualization,
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and container, i.e. shared kernel virtualization)" border="1"><colgroup><col align="left" class="type"><col align="left" class="id"><col align="left" class="product"></colgroup><thead><tr><th align="left">Type</th><th align="left">ID</th><th align="left">Product</th></tr></thead><tbody><tr><td rowspan="9" align="left">VM</td><td align="left"><code class="varname">qemu</code></td><td align="left">QEMU software virtualization</td></tr><tr><td align="left"><code class="varname">kvm</code></td><td align="left">Linux KVM kernel virtual machine</td></tr><tr><td align="left"><code class="varname">zvm</code></td><td align="left">s390 z/VM</td></tr><tr><td align="left"><code class="varname">vmware</code></td><td align="left">VMware Workstation or Server, and related products</td></tr><tr><td align="left"><code class="varname">microsoft</code></td><td align="left">Hyper-V, also known as Viridian or Windows Server Virtualization</td></tr><tr><td align="left"><code class="varname">oracle</code></td><td align="left">Oracle VM VirtualBox (historically marketed by innotek and Sun Microsystems)</td></tr><tr><td align="left"><code class="varname">xen</code></td><td align="left">Xen hypervisor (only domU, not dom0)</td></tr><tr><td align="left"><code class="varname">bochs</code></td><td align="left">Bochs Emulator</td></tr><tr><td align="left"><code class="varname">uml</code></td><td align="left">User-mode Linux</td></tr><tr><td rowspan="6" align="left">container</td><td align="left"><code class="varname">openvz</code></td><td align="left">OpenVZ/Virtuozzo</td></tr><tr><td align="left"><code class="varname">lxc</code></td><td align="left">Linux container implementation by LXC</td></tr><tr><td align="left"><code class="varname">lxc-libvirt</code></td><td align="left">Linux container implementation by libvirt</td></tr><tr><td align="left"><code class="varname">systemd-nspawn</code></td><td align="left">systemd's minimal container implementation, see <a href="systemd-nspawn.html"><span class="citerefentry"><span class="refentrytitle">systemd-nspawn</span>(1)</span></a></td></tr><tr><td align="left"><code class="varname">docker</code></td><td align="left">Docker container manager</td></tr></tbody></table></div></div><br class="table-break"><p>If multiple virtualization solutions are used,
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only the "innermost" is detected and identified. That
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means if both VM virtualization and container
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virtualization are used in conjunction, only the latter
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will be identified (unless <code class="option">--vm</code> is
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passed).</p></div><div class="refsect1"><a name="idm214177484544"></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="-c"><span class="term"><code class="option">-c</code>, </span><span class="term"><code class="option">--container</code></span><a class="headerlink" title="Permalink to this term" href="#-c">¶</a></dt><dd><p>Only detects container
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virtualization (i.e. shared kernel
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virtualization).</p></dd><dt id="-v"><span class="term"><code class="option">-v</code>, </span><span class="term"><code class="option">--vm</code></span><a class="headerlink" title="Permalink to this term" href="#-v">¶</a></dt><dd><p>Only detects VM
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virtualization (i.e. full hardware
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virtualization).</p></dd><dt id="-q"><span class="term"><code class="option">-q</code>, </span><span class="term"><code class="option">--quiet</code></span><a class="headerlink" title="Permalink to this term" href="#-q">¶</a></dt><dd><p>Suppress output of the
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virtualization technology
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identifier.</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.
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</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="idm214177474832"></a><h2 id="Exit status">Exit status<a class="headerlink" title="Permalink to this headline" href="#Exit%20status">¶</a></h2><p>If a virtualization technology is detected, 0 is
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returned, a non-zero code otherwise.</p></div><div class="refsect1"><a name="idm214177473536"></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="systemd-nspawn.html"><span class="citerefentry"><span class="refentrytitle">systemd-nspawn</span>(1)</span></a>
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</p></div></div></body></html>
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