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1 | <?xml version='1.0'?> <!--*-nxml-*--> | |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
4 | ||
5 | <!-- | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2012 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | --> | |
23 | ||
24 | <refentry id="systemd-machine-id-setup"> | |
25 | ||
26 | <refentryinfo> | |
27 | <title>systemd-machine-id-setup</title> | |
28 | <productname>systemd</productname> | |
29 | ||
30 | <authorgroup> | |
31 | <author> | |
32 | <contrib>Developer</contrib> | |
33 | <firstname>Lennart</firstname> | |
34 | <surname>Poettering</surname> | |
35 | <email>lennart@poettering.net</email> | |
36 | </author> | |
37 | </authorgroup> | |
38 | </refentryinfo> | |
39 | ||
40 | <refmeta> | |
41 | <refentrytitle>systemd-machine-id-setup</refentrytitle> | |
42 | <manvolnum>1</manvolnum> | |
43 | </refmeta> | |
44 | ||
45 | <refnamediv> | |
46 | <refname>systemd-machine-id-setup</refname> | |
47 | <refpurpose>Initialize the machine ID in /etc/machine-id</refpurpose> | |
48 | </refnamediv> | |
49 | ||
50 | <refsynopsisdiv> | |
51 | <cmdsynopsis> | |
52 | <command>systemd-machine-id-setup</command> | |
53 | </cmdsynopsis> | |
54 | </refsynopsisdiv> | |
55 | ||
56 | <refsect1> | |
57 | <title>Description</title> | |
58 | ||
59 | <para><command>systemd-machine-id-setup</command> may | |
60 | be used by system installer tools to initialize the | |
61 | machine ID stored in | |
62 | <filename>/etc/machine-id</filename> at install time | |
63 | with a randomly generated ID. See | |
64 | <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
65 | for more information about this file.</para> | |
66 | ||
67 | <para>This tool will execute no operation if | |
68 | <filename>/etc/machine-id</filename> is already | |
69 | initialized.</para> | |
70 | ||
71 | <para>If a valid D-Bus machine ID is already | |
72 | configured for the system, the D-Bus machine ID is | |
73 | copied and used to initialize the machine ID in | |
74 | <filename>/etc/machine-id</filename>.</para> | |
75 | ||
76 | <para>If run inside a KVM virtual machine and a UUID | |
77 | is passed via the <option>-uuid</option> option, this | |
78 | UUID is used to initialize the machine ID instead of a | |
79 | randomly generated one. The caller must ensure that the | |
80 | UUID passed is sufficiently unique and is different | |
81 | for every booted instanced of the VM.</para> | |
82 | ||
83 | <para>Similar, if run inside a Linux container | |
84 | environment and a UUID is set for the container this | |
85 | is used to initialize the machine ID. For details see | |
86 | the documentation of the <ulink | |
87 | url="http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface">Container | |
88 | Interface</ulink>.</para> | |
89 | ||
90 | </refsect1> | |
91 | ||
92 | <refsect1> | |
93 | <title>Options</title> | |
94 | ||
95 | <para>The following options are understood:</para> | |
96 | ||
97 | <variablelist> | |
98 | <varlistentry> | |
99 | <term><option>-h</option></term> | |
100 | <term><option>--help</option></term> | |
101 | ||
102 | <listitem><para>Prints a short help | |
103 | text and exits.</para></listitem> | |
104 | </varlistentry> | |
105 | ||
106 | <varlistentry> | |
107 | <term><option>--version</option></term> | |
108 | ||
109 | <listitem><para>Prints a short version | |
110 | string and exits.</para></listitem> | |
111 | </varlistentry> | |
112 | </variablelist> | |
113 | ||
114 | </refsect1> | |
115 | ||
116 | <refsect1> | |
117 | <title>Exit status</title> | |
118 | ||
119 | <para>On success 0 is returned, a non-zero failure | |
120 | code otherwise.</para> | |
121 | </refsect1> | |
122 | ||
123 | <refsect1> | |
124 | <title>See Also</title> | |
125 | <para> | |
126 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
127 | <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
128 | <citerefentry><refentrytitle>dbus-uuidgen</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
129 | </para> | |
130 | </refsect1> | |
131 | ||
132 | </refentry> |