systemd/man/systemd-tmpfiles.xml
Zbigniew Jędrzejewski-Szmek f7ac1ed2ca tmpfiles: interpret "-" as stdin
2016-04-20 09:00:39 -04:00

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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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<refentry id="systemd-tmpfiles"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-tmpfiles</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-tmpfiles</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-tmpfiles</refname>
<refname>systemd-tmpfiles-setup.service</refname>
<refname>systemd-tmpfiles-setup-dev.service</refname>
<refname>systemd-tmpfiles-clean.service</refname>
<refname>systemd-tmpfiles-clean.timer</refname>
<refpurpose>Creates, deletes and cleans up volatile
and temporary files and directories</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>systemd-tmpfiles</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="opt" rep="repeat"><replaceable>CONFIGFILE</replaceable></arg>
</cmdsynopsis>
<para><filename>systemd-tmpfiles-setup.service</filename></para>
<para><filename>systemd-tmpfiles-setup-dev.service</filename></para>
<para><filename>systemd-tmpfiles-clean.service</filename></para>
<para><filename>systemd-tmpfiles-clean.timer</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-tmpfiles</command> creates, deletes, and
cleans up volatile and temporary files and directories, based on
the configuration file format and location specified in
<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
</para>
<para>If invoked with no arguments, it applies all directives from all configuration
files. If one or more absolute filenames are passed on the command line, only the
directives in these files are applied. If <literal>-</literal> is specified instead
of a filename, directives are read from standard input. If only the basename of a
configuration file is specified, all configuration directories as specified in
<citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
are searched for a matching file.</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>--create</option></term>
<listitem><para>If this option is passed, all files and
directories marked with
<varname>f</varname>,
<varname>F</varname>,
<varname>w</varname>,
<varname>d</varname>,
<varname>D</varname>,
<varname>v</varname>,
<varname>p</varname>,
<varname>L</varname>,
<varname>c</varname>,
<varname>b</varname>,
<varname>m</varname>
in the configuration files are created or written to. Files
and directories marked with
<varname>z</varname>,
<varname>Z</varname>,
<varname>t</varname>,
<varname>T</varname>,
<varname>a</varname>, and
<varname>A</varname> have their ownership, access mode and
security labels set. </para></listitem>
</varlistentry>
<varlistentry>
<term><option>--clean</option></term>
<listitem><para>If this option is passed, all files and
directories with an age parameter configured will be cleaned
up.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--remove</option></term>
<listitem><para>If this option is passed, the contents of
directories marked with <varname>D</varname> or
<varname>R</varname>, and files or directories themselves
marked with <varname>r</varname> or <varname>R</varname> are
removed.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--boot</option></term>
<listitem><para>Also execute lines with an exclamation mark.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--prefix=<replaceable>path</replaceable></option></term>
<listitem><para>Only apply rules with paths that start with
the specified prefix. This option can be specified multiple
times.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--exclude-prefix=<replaceable>path</replaceable></option></term>
<listitem><para>Ignore rules with paths that start with the
specified prefix. This option can be specified multiple
times.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--root=<replaceable>root</replaceable></option></term>
<listitem><para>Takes a directory path as an argument. All
paths will be prefixed with the given alternate
<replaceable>root</replaceable> path, including config search
paths. </para></listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
</variablelist>
<para>It is possible to combine <option>--create</option>,
<option>--clean</option>, and <option>--remove</option> in one
invocation. For example, during boot the following command line is
executed to ensure that all temporary and volatile directories are
removed and created according to the configuration file:</para>
<programlisting>systemd-tmpfiles --remove --create</programlisting>
</refsect1>
<refsect1>
<title>Unprivileged --cleanup operation</title>
<para><command>systemd-tmpfiles</command> tries to avoid changing
the access and modification times on the directories it accesses,
which requires <constant>CAP_ADMIN</constant> privileges. When
running as non-root, directories which are checked for files to
clean up will have their access time bumped, which might prevent
their cleanup.
</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>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>