lfs-book-zh_CN/chapter07/hostname.xml

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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
  %general-entities;
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<sect1 id="ch-scripts-hostname">
  <?dbhtml filename="hostname.html"?>

  <title>Configuring the system hostname</title>

  <indexterm zone="ch-scripts-hostname">
    <primary sortas="d-hostname">hostname</primary>
    <secondary>configuring</secondary>
  </indexterm>

  <para>During the boot process, both Systemd and System V use the same
  file for establishing the system's hostname.  This needs to be configured by
  creating <filename>/etc/hostname</filename>.</para>

  <para>Create the <filename>/etc/hostname</filename> file and enter a
  hostname by running:</para>

<screen><userinput>echo "<replaceable>&lt;lfs&gt;</replaceable>" &gt; /etc/hostname</userinput></screen>

  <para><replaceable>&lt;lfs&gt;</replaceable> needs to be replaced with the name given
  to the computer. Do not enter the Fully Qualified Domain Name (FQDN) here. That
  information is put in the <filename>/etc/hosts</filename> file.</para>

</sect1>