man/standard-options.xml

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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->

<variablelist>
  <varlistentry id='help'>
    <term><option>-h</option></term>
    <term><option>--help</option></term>

    <listitem id='help-text'>
      <para>Print a short help text and exit.
    </para></listitem>
  </varlistentry>

  <varlistentry id='version'>
    <term><option>--version</option></term>

    <listitem id='version-text'>
      <para>Print a short version string and exit.</para>
    </listitem>
  </varlistentry>

  <varlistentry id='no-pager'>
    <term><option>--no-pager</option></term>

    <listitem>
      <para>Do not pipe output into a pager.</para>
    </listitem>
  </varlistentry>

  <varlistentry id='no-ask-password'>
    <term><option>--no-ask-password</option></term>

    <listitem><para>Do not query the user for authentication for privileged operations.</para></listitem>
  </varlistentry>

  <varlistentry id='legend'>
    <term><option>--legend=</option><replaceable>BOOL</replaceable></term>

    <listitem>
      <para>Enable or disable printing of the legend, i.e. column headers and the footer with hints. The
      legend is printed by default, unless disabled with <option>--quiet</option> or similar.</para>
    </listitem>
  </varlistentry>

  <varlistentry id='no-legend'>
    <term><option>--no-legend</option></term>

    <listitem>
      <para>Do not print the legend, i.e. column headers and the
      footer with hints.</para>
    </listitem>
  </varlistentry>

  <varlistentry id='cat-config'>
    <term><option>--cat-config</option></term>

    <listitem>
      <para>Copy the contents of config files to standard output.
      Before each file, the filename is printed as a comment.</para>
    </listitem>
  </varlistentry>

  <varlistentry id='json'>
    <term><option>--json=</option><replaceable>MODE</replaceable></term>

    <listitem><para>Shows output formatted as JSON. Expects one of <literal>short</literal> (for the
    shortest possible output without any redundant whitespace or line breaks), <literal>pretty</literal>
    (for a pretty version of the same, with indentation and line breaks) or <literal>off</literal> (to turn
    off JSON output, the default).</para></listitem>
  </varlistentry>

  <varlistentry id='signal'>
    <term><option>-s</option></term>
    <term><option>--signal=</option></term>

    <listitem>
      <para>When used with <command>kill</command>, choose which signal to send to selected processes. Must
      be one of the well-known signal specifiers such as <constant>SIGTERM</constant>,
      <constant>SIGINT</constant> or <constant>SIGSTOP</constant>. If omitted, defaults to
      <option>SIGTERM</option>.</para>

      <para>The special value <literal>help</literal> will list the known values and the program will exit
      immediately, and the special value <literal>list</literal> will list known values along with the
      numerical signal numbers and the program will exit immediately.</para>
    </listitem>
  </varlistentry>
</variablelist>