v5_1-pre1
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Last change
on this file since 9a639a3 was bae6e15, checked in by Larry Lawrence <larry@…>, 20 years ago |
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fix xsl chunk error in PostLFS section
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2105 af4574ff-66df-0310-9fd7-8a98e5e911e0
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| 1 | <sect1 id="postlfs-config-random" xreflabel="random">
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| 2 | <?dbhtml filename="random.html"?>
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| 3 | <title>Random number generation</title>
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| 4 |
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| 5 | <para>The Linux kernel supplies a random number generator which is accessed
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| 6 | through <filename class="devicefile">/dev/random</filename> and
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| 7 | <filename class="devicefile">/dev/urandom</filename>. Programs that utilize
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| 8 | the random and urandom devices, such as <application>OpenSSH</application>,
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| 9 | will benefit from these instructions.</para>
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| 10 |
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| 11 | <para>When a Linux system starts up without much operator interaction, the
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| 12 | entropy pool, data used to compute a random number, may be in a fairly
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| 13 | predictable state. This creates the real possibility that the number generated
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| 14 | at startup may always be the same. In order to counteract this effect,
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| 15 | you should carry the entropy pool information across your shut-downs and
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| 16 | start-ups.</para>
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| 17 |
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| 18 | <para>Install the <filename>/etc/rc.d/init.d/random</filename>
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| 19 | init script included with the
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| 20 | <xref linkend="intro-important-bootscripts"/> package.</para>
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| 21 |
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| 22 | <screen><userinput><command>make install-random</command></userinput></screen>
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| 23 |
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| 24 | </sect1>
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| 25 |
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