Systemd/man/systemd-machine-id-setup.xml
Lennart Poettering 5430f7f2bc relicense to LGPLv2.1 (with exceptions)
We finally got the OK from all contributors with non-trivial commits to
relicense systemd from GPL2+ to LGPL2.1+.

Some udev bits continue to be GPL2+ for now, but we are looking into
relicensing them too, to allow free copy/paste of all code within
systemd.

The bits that used to be MIT continue to be MIT.

The big benefit of the relicensing is that closed source code may now
link against libsystemd-login.so and friends.
2012-04-12 00:24:39 +02:00

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<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
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Copyright 2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
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systemd is distributed in the hope that it will be useful, but
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You should have received a copy of the GNU Lesser General Public License
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<refentry id="systemd-machine-id-setup">
<refentryinfo>
<title>systemd-machine-id-setup</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-machine-id-setup</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-machine-id-setup</refname>
<refpurpose>Initialize the machine ID in <filename>/etc/machine-id</filename></refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>systemd-machine-id-setup</command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-machine-id-setup</command> may
be used by system installer tools to initialize the
machine ID stored in
<filename>/etc/machine-id</filename> at install time
with a randomly generated ID. See
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for more information about this file.</para>
<para>This tool will execute no operation if
<filename>/etc/machine-id</filename> is already
initialized.</para>
<para>If a valid D-Bus machine ID is already
configured for the system the D-Bus machine ID is
copied and used to initialize the machine ID in
<filename>/etc/machine-id</filename>.</para>
<para>If run inside a KVM virtual machine and a UUID
is passed via the <option>-uuid</option> option this
UUID is used to initialize the machine ID instead of a
randomly generated one. The caller must ensure that the
UUID passed is sufficiently unique and is different
for every booted instanced of the VM.</para>
<para>Similar, if run inside a Linux container
environment and a UUID is set for the container this
is used to initialize the machine ID. For details see
the documentation of the <ulink
url="http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface">Container
Interface</ulink>.</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>This tool does not take any options or arguments.</para>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>On success 0 is returned, a non-zero failure
code otherwise.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>dbus-uuidgen</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>