sd-event: define a new PREPARING state

[thirdparty/systemd.git] / man / systemd-tmpfiles.xml

<?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 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>