systemd/man/systemd-bsod.service.xml

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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->

<refentry id="systemd-bsod.service" conditional='HAVE_QRENCODE ENABLE_INITRD'
          xmlns:xi="http://www.w3.org/2001/XInclude">

  <refentryinfo>
    <title>systemd-bsod</title>
    <productname>systemd</productname>
  </refentryinfo>

  <refmeta>
    <refentrytitle>systemd-bsod.service</refentrytitle>
    <manvolnum>8</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>systemd-bsod.service</refname>
    <refname>systemd-bsod</refname>
    <refpurpose>Displays boot-time emergency log message in full screen</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <para><filename>systemd-bsod.service</filename></para>
    <cmdsynopsis>
      <command>/usr/lib/systemd/systemd-bsod</command>
      <arg choice="opt" rep="repeat">OPTIONS</arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para><filename>systemd-bsod.service</filename> is used to display a blue screen which contains a message
    relating to a boot failure, including a QR code which can be scanned to get helpful information about the
    failure.</para>
  </refsect1>

  <refsect1>
    <title>Options</title>

    <para>The following options are understood by <command>systemd-bsod</command>:</para>

    <variablelist>
      <xi:include href="standard-options.xml" xpointer="help" />
      <xi:include href="standard-options.xml" xpointer="version" />

      <varlistentry>
        <term><option>-c</option></term>
        <term><option>--continuous</option></term>

        <listitem><para>When specified, <command>systemd-bsod</command> waits continuously for changes in the
        journal if it doesn't find any emergency messages on the initial attempt.</para>

         <xi:include href="version-info.xml" xpointer="v255"/></listitem>
      </varlistentry>

      <varlistentry>
        <term><option>--tty=<replaceable></replaceable></option></term>

        <listitem><para>Specify the TTY to output to. By default <command>systemd-bsod</command> will
        automatically find a free VT to display the message on. If this option is specified a TTY may be
        selected explicitly. Use <option>--tty=/dev/tty</option> to direct output to the terminal the command
        is invoked on.</para>

         <xi:include href="version-info.xml" xpointer="v256"/></listitem>
      </varlistentry>
    </variablelist>

  </refsect1>

  <refsect1>
    <title>Exit status</title>

    <para>On success (displaying the journal message successfully), 0 is returned, a non-zero failure code otherwise.</para>
  </refsect1>

  <refsect1>
    <title>See Also</title>
    <para><simplelist type="inline">
      <member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
    </simplelist></para>
  </refsect1>

</refentry>