3 <!DOCTYPE refentry PUBLIC
"-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
5 SPDX-License-Identifier: LGPL-2.1+
7 Copyright 2012 Lennart Poettering
9 <refentry id=
"systemd-random-seed.service" conditional='ENABLE_RANDOMSEED'
>
12 <title>systemd-random-seed.service
</title>
13 <productname>systemd
</productname>
17 <contrib>Developer
</contrib>
18 <firstname>Lennart
</firstname>
19 <surname>Poettering
</surname>
20 <email>lennart@poettering.net
</email>
26 <refentrytitle>systemd-random-seed.service
</refentrytitle>
27 <manvolnum>8</manvolnum>
31 <refname>systemd-random-seed.service
</refname>
32 <refname>systemd-random-seed
</refname>
33 <refpurpose>Load and save the system random seed at boot and shutdown
</refpurpose>
37 <para><filename>systemd-random-seed.service
</filename></para>
38 <para><filename>/usr/lib/systemd/random-seed
</filename></para>
42 <title>Description
</title>
44 <para><filename>systemd-random-seed.service
</filename> is a
45 service that restores the random seed of the system at early boot
46 and saves it at shutdown. See
47 <citerefentry><refentrytitle>random
</refentrytitle><manvolnum>4</manvolnum></citerefentry>
48 for details. Saving/restoring the random seed across boots
49 increases the amount of available entropy early at boot. On disk
50 the random seed is stored in
51 <filename>/var/lib/systemd/random-seed
</filename>.
</para>
55 <title>See Also
</title>
57 <citerefentry><refentrytitle>systemd
</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
58 <citerefentry><refentrytitle>random
</refentrytitle><manvolnum>4</manvolnum></citerefentry>