eudev/man/tmpfiles.d.xml

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<refentry id="tmpfiles.d">

        <refentryinfo>
                <title>tmpfiles.d</title>
                <productname>systemd</productname>

                <authorgroup>
                        <author>
                                <contrib>Documentation</contrib>
                                <firstname>Brandon</firstname>
                                <surname>Philips</surname>
                                <email>brandon@ifup.org</email>
                        </author>
                </authorgroup>
        </refentryinfo>

        <refmeta>
                <refentrytitle>tmpfiles.d</refentrytitle>
                <manvolnum>5</manvolnum>
        </refmeta>

        <refnamediv>
                <refname>tmpfiles.d</refname>
                <refpurpose>configuration for creation, deletion and cleaning of tmpfiles</refpurpose>
        </refnamediv>

        <refsect1>
                <title>Description</title>

		<para><command>systemd</command> uses <filename>/etc/tmpfiles.d/</filename> to describe the creation, cleaning and removal of temporary files and directories
which usually reside in <filename>/var/run</filename> or <filename>/tmp</filename>).
Each configuration file is named in the style of
<filename>/etc/tmpfiles.d/&lt;program&gt;.conf</filename></para>

        </refsect1>

        <refsect1>
		<title>Configuration Format</title>

		<para>The configuration format is one line per path containing
action, mode, ownership and age fields:</para>

	<programlisting>type path          mode uid  gid  age
d    /var/run/user 0755 root root 10d
</programlisting>

	<refsect2>
		<title>type</title>
                <variablelist>
                        <varlistentry>
                                <term><varname>f</varname></term>
                                <listitem><para>create a file</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>F</varname></term>
                                <listitem><para>truncate a file</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>d</varname></term>
                                <listitem><para>create a directory</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>D</varname></term>
                                <listitem><para>truncate a directory</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>x</varname></term>
                                <listitem><para>ignore the path</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>r</varname></term>
                                <listitem><para>remove the path</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>R</varname></term>
                                <listitem><para>recursively remove the path</para></listitem>
                        </varlistentry>
                </variablelist>
	</refsect2>

	<refsect2>
		<title>age</title>
		<para>The date field, when set, is used to decide what files to delete when cleaning. If a file or directory is older than the current time minus the age field it is deleted. The field format is an integer followed by one of the following postfixes:</para>
                <variablelist>
		<varlistentry><term><varname>sec</varname></term>
		<term><varname>s</varname></term>
		<term><varname>min</varname></term>
		<term><varname>hr</varname></term>
		<term><varname>h</varname></term>
		<term><varname>d</varname></term>
		<term><varname>w</varname></term>
		<term><varname>msec</varname></term>
		<term><varname>ms</varname></term>
		<term><varname>m</varname></term>
		<term><varname>usec</varname></term>
		<term><varname>us</varname></term></varlistentry>
                </variablelist>
	</refsect2>


        </refsect1>

        <refsect1>
                <title>Example</title>
                <example>
                        <title>/etc/tmpfiles.d/screen.conf example</title>
                        <para><command>screen</command> needs two directories created at boot with specific modes and ownership.</para>

                        <programlisting>d /var/run/screens 1777 root root 10d
d /var/run/uscreens 0755 root root 10d
</programlisting>
                </example>
        </refsect1>

        <refsect1>
                <title>See Also</title>
                <para>
                        <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
                </para>
        </refsect1>

</refentry>