systemd-detect-virt.xml revision dfdebb1b925332352966804303b2516a6506a429
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Copyright 2010 Lennart Poettering
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<refentry id="systemd-detect-virt"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-detect-virt</title>
<productname>systemd</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Lennart</firstname>
<surname>Poettering</surname>
<email>lennart@poettering.net</email>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>systemd-detect-virt</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-detect-virt</refname>
<refpurpose>Detect execution in a virtualized environment</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>systemd-detect-virt <arg choice="opt" rep="repeat">OPTIONS</arg></command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-detect-virt</command> detects
execution in a virtualized environment. It identifies
the virtualization technology and can distinguish full
VM virtualization from container
virtualization.</para>
<para>When executed without <option>--quiet</option>
will print a short identifier for the detected
virtualization technology. The following technologies
are currently identified: <varname>qemu</varname>,
<varname>kvm</varname>, <varname>vmware</varname>,
<varname>microsoft</varname>,
<varname>oracle</varname>, <varname>xen</varname>,
<varname>bochs</varname>, <varname>chroot</varname>,
<varname>uml</varname>,
<varname>openvz</varname>, <varname>lxc</varname>,
<varname>lxc-libvirt</varname>,
<varname>systemd-nspawn</varname>.</para>
<para>If multiple virtualization solutions are used,
only the "innermost" is detected and identified. That
means if both VM virtualization and container
virtualization are used in conjunction, only the latter
will be identified (unless <option>--vm</option> is
passed).</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>-c</option></term>
<term><option>--container</option></term>
<listitem><para>Only detects container
virtualization (i.e. shared kernel
virtualization).</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-v</option></term>
<term><option>--vm</option></term>
<listitem><para>Only detects VM
virtualization (i.e. full hardware
virtualization).</para></listitem>
</varlistentry>
<varlistentry>
<term><option>-q</option></term>
<term><option>--quiet</option></term>
<listitem><para>Suppress output of the
virtualization technology
identifier.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>If a virtualization technology is detected, 0 is
returned, a non-zero code otherwise.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>