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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content= "application/xhtml+xml; charset=iso-8859-1" /> <title> 11.12. Customizing the /etc/hosts File </title> <link rel="stylesheet" href="../stylesheets/lfs.css" type="text/css" /> <meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /> <link rel="stylesheet" href="../stylesheets/lfs-print.css" type= "text/css" media="print" /> </head> <body id="lfs" class="CLFS-SVN-20060417-PowerPC"> <div class="navheader"> <div class="headertitles"> <h4> Cross-Compiled Linux From Scratch - Version CLFS-SVN-20060417-PowerPC </h4> <h3> Chapter 11. Setting Up System Bootscripts </h3> </div> <ul class="headerlinks"> <li class="prev"> <a accesskey="p" href="hostname.html" title= "Configuring the localnet Script">Prev</a> <p> Configuring the localnet Script </p> </li> <li class="next"> <a accesskey="n" href="network.html" title= "Configuring the network Script">Next</a> <p> Configuring the network Script </p> </li> <li class="up"> <a accesskey="u" href="chapter.html" title= "Chapter 11. Setting Up System Bootscripts">Up</a>. </li> <li class="home"> <a accesskey="h" href="../index.html" title= "Cross-Compiled Linux From Scratch - Version CLFS-SVN-20060417-PowerPC"> Home</a> </li> </ul> </div> <div class="sect1" lang="en" xml:lang="en"> <div class="titlepage"> <h1 class="sect1"> 11.12. Customizing the /etc/hosts File </h1> </div> <p> If a network card is to be configured, decide on the IP address, FQDN, and possible aliases for use in the <tt class= "filename">/etc/hosts</tt> file. The syntax is: </p> <pre class="screen"><IP address> myhost.example.org aliases</pre> <p> Unless the computer is to be visible to the Internet (i.e., there is a registered domain and a valid block of assigned IP addresses—most users do not have this), make sure that the IP address is in the private network IP address range. Valid ranges are: </p> <pre class="screen"><tt class="literal"> Class Networks A 10.0.0.0 B 172.16.0.0 through 172.31.0.255 C 192.168.0.0 through 192.168.255.255</tt></pre> <p> A valid IP address could be 192.168.1.1. A valid FQDN for this IP could be <tt class="uri">www.linuxfromscratch.org</tt> (not recommended because this is a valid registered domain address and could cause domain name server issues). </p> <p> Even if not using a network card, an FQDN is still required. This is necessary for certain programs to operate correctly. </p> <p> Create the <tt class="filename">/etc/hosts</tt> file by running: </p> <pre class="userinput"><kbd class="command">cat > /etc/hosts << "EOF"<tt class="literal"># Begin /etc/hosts (network card version)127.0.0.1 localhost<em class="replaceable"><tt>[192.168.1.1]</tt></em> <em class="replaceable"><tt>[<HOSTNAME>.example.org]</tt></em> <em class="replaceable"><tt>[HOSTNAME]</tt></em># End /etc/hosts (network card version)</tt>EOF</kbd></pre> <p> The <em class="replaceable"><tt>[192.168.1.1]</tt></em> and <em class="replaceable"><tt>[<HOSTNAME>.example.org]</tt></em> values need to be changed for specific users or requirements (if assigned an IP address by a network/system administrator and the machine will be connected to an existing network). </p> <p> If a network card is not going to be configured, create the <tt class="filename">/etc/hosts</tt> file by running: </p> <pre class="userinput"><kbd class="command">cat > /etc/hosts << "EOF"<tt class="literal"># Begin /etc/hosts (no network card version)127.0.0.1 <em class="replaceable"><tt>[<HOSTNAME>.example.org]</tt></em> <em class="replaceable"><tt>[HOSTNAME]</tt></em> localhost# End /etc/hosts (no network card version)</tt>EOF</kbd></pre> </div> <div class="navfooter"> <ul> <li class="prev"> <a accesskey="p" href="hostname.html" title= "Configuring the localnet Script">Prev</a> <p> Configuring the localnet Script </p> </li> <li class="next"> <a accesskey="n" href="network.html" title= "Configuring the network Script">Next</a> <p> Configuring the network Script </p> </li> <li class="up"> <a accesskey="u" href="chapter.html" title= "Chapter 11. Setting Up System Bootscripts">Up</a>. </li> <li class="home"> <a accesskey="h" href="../index.html" title= "Cross-Compiled Linux From Scratch - Version CLFS-SVN-20060417-PowerPC"> Home</a>. </li> </ul> </div> </body></html>⌨️ 快捷键说明
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