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1<?xml version="1.0"?>
2<!--*-nxml-*-->
3<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
4<!--
5 This file is part of systemd.
6
7 Copyright 2010 Brandon Philips
8
9 systemd is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 systemd is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
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19 You should have received a copy of the GNU General Public License
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21-->
22<refentry id="tmpfiles.d">
23
24 <refentryinfo>
25 <title>tmpfiles.d</title>
26 <productname>systemd</productname>
27
28 <authorgroup>
29 <author>
30 <contrib>Documentation</contrib>
31 <firstname>Brandon</firstname>
32 <surname>Philips</surname>
33 <email>brandon@ifup.org</email>
34 </author>
35 </authorgroup>
36 </refentryinfo>
37
38 <refmeta>
39 <refentrytitle>tmpfiles.d</refentrytitle>
40 <manvolnum>5</manvolnum>
41 </refmeta>
42
43 <refnamediv>
44 <refname>tmpfiles.d</refname>
45 <refpurpose>configuration for creation, deletion and cleaning of tmpfiles</refpurpose>
46 </refnamediv>
47
48 <refsect1>
49 <title>Description</title>
50
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51 <para><command>systemd</command> uses
52 <filename>/etc/tmpfiles.d/</filename> to describe the
53 creation, cleaning and removal of temporary files and
54 directories which usually reside in
55 <filename>/var/run</filename> or
56 <filename>/tmp</filename>). Each configuration file
57 is named in the style of
58 <filename>/etc/tmpfiles.d/&lt;program&gt;.conf</filename></para>
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59 </refsect1>
60
61 <refsect1>
62 <title>Configuration Format</title>
63
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64 <para>The configuration format is one line per path
65 containing action, mode, ownership and age
66 fields:</para>
67
68 <programlisting>type path mode uid gid age
69d /var/run/user 0755 root root 10d</programlisting>
70
71 <refsect2>
72 <title>mode</title>
73
74 <para>The file access mode to use for this
75 file or directory. If ommited or when set to -
76 the default is used: 0755 for directories,
77 0644 for files.</para>
78 </refsect2>
79
80 <refsect2>
81 <title>uid, gid</title>
82
83 <para>The user and group to use for this file
84 or directory. This may either be a numeric
85 user/group ID or a user or group name. If
86 ommited or when set to - the default 0 is
87 used.</para>
88 </refsect2>
89
90 <refsect2>
91 <title>type</title>
92 <variablelist>
93 <varlistentry>
94 <term><varname>f</varname></term>
95 <listitem><para>create a file if it doesn't exist yet</para></listitem>
96 </varlistentry>
97
98 <varlistentry>
99 <term><varname>F</varname></term>
100 <listitem><para>create or truncate a file</para></listitem>
101 </varlistentry>
102
103 <varlistentry>
104 <term><varname>d</varname></term>
105 <listitem><para>create a directory if it doesn't exist yet</para></listitem>
106 </varlistentry>
107
108 <varlistentry>
109 <term><varname>D</varname></term>
110 <listitem><para>create or empty a directory</para></listitem>
111 </varlistentry>
112
113 <varlistentry>
114 <term><varname>x</varname></term>
115 <listitem><para>ignore a path</para></listitem>
116 </varlistentry>
117
118 <varlistentry>
119 <term><varname>r</varname></term>
120 <listitem><para>remove a path</para></listitem>
121 </varlistentry>
122
123 <varlistentry>
124 <term><varname>R</varname></term>
125 <listitem><para>recursively remove a path</para></listitem>
126 </varlistentry>
127 </variablelist>
128 </refsect2>
129
130 <refsect2>
131 <title>age</title>
132 <para>The date field, when set, is used to
133 decide what files to delete when cleaning. If
134 a file or directory is older than the current
135 time minus the age field it is deleted. The
136 field format is a series of integers each
137 followed by one of the following
138 postfixes for the respective time units:</para>
139
140 <variablelist>
141 <varlistentry>
142 <term><varname>s</varname></term>
143 <term><varname>min</varname></term>
144 <term><varname>h</varname></term>
145 <term><varname>d</varname></term>
146 <term><varname>w</varname></term>
147 <term><varname>ms</varname></term>
148 <term><varname>m</varname></term>
149 <term><varname>us</varname></term></varlistentry>
150 </variablelist>
4149f86d 151
aeee2322 152 <para>If multiple integers and units are specified the time values are summed up.</para>
4149f86d 153
aeee2322 154 <para>The age field only applies to lines starting with d, D and x. If ommited or set to - no automatic clean-up is done.</para>
4149f86d 155
aeee2322 156 </refsect2>
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157
158 </refsect1>
159
160 <refsect1>
161 <title>Example</title>
162 <example>
163 <title>/etc/tmpfiles.d/screen.conf example</title>
164 <para><command>screen</command> needs two directories created at boot with specific modes and ownership.</para>
165
166 <programlisting>d /var/run/screens 1777 root root 10d
aeee2322 167d /var/run/uscreens 0755 root root 10d12h</programlisting>
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168 </example>
169 </refsect1>
170
171 <refsect1>
172 <title>See Also</title>
173 <para>
174 <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
175 </para>
176 </refsect1>
177
178</refentry>