10.0
10.1
11.0
11.1
11.2
11.3
12.0
12.1
6.0
6.1
6.2
6.2.0
6.2.0-rc1
6.2.0-rc2
6.3
6.3-rc1
6.3-rc2
6.3-rc3
7.10
7.4
7.5
7.6
7.6-blfs
7.6-systemd
7.7
7.8
7.9
8.0
8.1
8.2
8.3
8.4
9.0
9.1
basic
bdubbs/svn
elogind
gimp3
gnome
kde5-13430
kde5-14269
kde5-14686
kea
ken/TL2024
ken/inkscape-core-mods
ken/tuningfonts
krejzi/svn
lazarus
lxqt
nosym
perl-modules
plabs/newcss
plabs/python-mods
python3.11
qt5new
rahul/power-profiles-daemon
renodr/vulkan-addition
systemd-11177
systemd-13485
trunk
upgradedb
xry111/for-12.3
xry111/intltool
xry111/llvm18
xry111/soup3
xry111/spidermonkey128
xry111/test-20220226
xry111/xf86-video-removal
Last change
on this file since e578536 was f8d632ac, checked in by Bruce Dubbs <bdubbs@…>, 20 years ago |
New XML Chapter 3
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2287 af4574ff-66df-0310-9fd7-8a98e5e911e0
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1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 | ]>
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7 |
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8 | <sect1 id="postlfs-config-random" xreflabel="random">
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9 | <?dbhtml filename="random.html"?>
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10 | <title>Random number generation</title>
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11 |
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12 | <para>The Linux kernel supplies a random number generator which is accessed
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13 | through <filename class="devicefile">/dev/random</filename> and
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14 | <filename class="devicefile">/dev/urandom</filename>. Programs that utilize
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15 | the random and urandom devices, such as <application>OpenSSH</application>,
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16 | will benefit from these instructions.</para>
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17 |
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18 | <para>When a Linux system starts up without much operator interaction, the
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19 | entropy pool, data used to compute a random number, may be in a fairly
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20 | predictable state. This creates the real possibility that the number generated
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21 | at startup may always be the same. In order to counteract this effect,
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22 | you should carry the entropy pool information across your shut-downs and
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23 | start-ups.</para>
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24 |
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25 | <para>Install the <filename>/etc/rc.d/init.d/random</filename>
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26 | init script included with the
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27 | <xref linkend="intro-important-bootscripts"/> package.</para>
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28 |
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29 | <screen><userinput><command>make install-random</command></userinput></screen>
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30 |
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31 | </sect1>
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32 |
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