source: postlfs/config/random.xml@ 4774914f

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Last change on this file since 4774914f was 4774914f, checked in by Randy McMurchy <randy@…>, 17 years ago

Removed excessive whitespace from various package instructions

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@3165 af4574ff-66df-0310-9fd7-8a98e5e911e0

  • Property mode set to 100644
File size: 1.4 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3 "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="postlfs-config-random" xreflabel="random">
9<sect1info>
10<othername>$LastChangedBy$</othername>
11<date>$Date$</date>
12</sect1info>
13<?dbhtml filename="random.html"?>
14<title>Random number generation</title>
15
16<para>The Linux kernel supplies a random number generator which is accessed
17through <filename class="devicefile">/dev/random</filename> and
18<filename class="devicefile">/dev/urandom</filename>. Programs that utilize
19the random and urandom devices, such as <application>OpenSSH</application>,
20will benefit from these instructions.</para>
21
22<para>When a Linux system starts up without much operator interaction, the
23entropy pool, data used to compute a random number, may be in a fairly
24predictable state. This creates the real possibility that the number generated
25at startup may always be the same. In order to counteract this effect,
26you should carry the entropy pool information across your shut-downs and
27start-ups.</para>
28
29<para>Install the <filename>/etc/rc.d/init.d/random</filename>
30init script included with the
31<xref linkend="intro-important-bootscripts"/> package.</para>
32
33<screen><userinput><command>make install-random</command></userinput></screen>
34
35</sect1>
36
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