man/systemd-random-seed.service.xml


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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">
<!--
  This file is part of systemd.

  Copyright 2012 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
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  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
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-->
<refentry id="systemd-random-seed.service" conditional='ENABLE_RANDOMSEED'>

  <refentryinfo>
    <title>systemd-random-seed.service</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-random-seed.service</refentrytitle>
    <manvolnum>8</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>systemd-random-seed.service</refname>
    <refname>systemd-random-seed</refname>
    <refpurpose>Load and save the system random seed at boot and shutdown</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <para><filename>systemd-random-seed.service</filename></para>
    <para><filename>/usr/lib/systemd/systemd-random-seed</filename></para>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para><filename>systemd-random-seed.service</filename> is a
    service that restores the random seed of the system at early-boot
    and saves it at shutdown. See
    <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry>
    for details. Saving/restoring the random seed across boots
    increases the amount of available entropy early at boot. On disk
    the random seed is stored in
    <filename>/var/lib/systemd/random-seed</filename>.</para>
  </refsect1>

  <refsect1>
    <title>See Also</title>
    <para>
      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry>
    </para>
  </refsect1>

</refentry>