lfs-book-zh_CN/chapter06/file.xml

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<sect1 id="ch-system-file" role="wrap">
  <?dbhtml filename="file.html"?>

  <title>File-&file-version;</title>

  <indexterm zone="ch-system-file">
    <primary sortas="a-File">File</primary>
  </indexterm>

  <sect2 role="package">
    <title/>

    <para>The File package contains a utility for determining the type of a given
    file or files.</para>

    <segmentedlist>
      <segtitle>&buildtime;</segtitle>
      <segtitle>&diskspace;</segtitle>

      <seglistitem>
        <seg>&file-ch6-sbu;</seg>
        <seg>&file-ch6-du;</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

  <sect2 role="installation">
    <title>Installation of File</title>

    <para>Apply a patch to fix a bug caused by an undefined constant:</para>

<screen><userinput>patch -Np1 -i ../&file-reg_startend-patch;</userinput></screen>

    <para>Prepare File for compilation:</para>

<screen><userinput>./configure --prefix=/usr</userinput></screen>

    <para>Compile the package:</para>

<screen><userinput>make</userinput></screen>

    <para>This package does not come with a test suite.</para>

    <para>Install the package:</para>

<screen><userinput>make install</userinput></screen>

  </sect2>


  <sect2 id="contents-file" role="content">
    <title>Contents of File</title>

    <segmentedlist>
      <segtitle>Installed programs</segtitle>
      <segtitle>Installed library</segtitle>

      <seglistitem>
        <seg>file</seg>
        <seg>libmagic.{a,so}</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="file">
        <term><command>file</command></term>
        <listitem>
          <para>Tries to classify each given file; it does this by performing
          several tests&mdash;file system tests, magic number tests, and language
          tests</para>
          <indexterm zone="ch-system-file file">
            <primary sortas="b-file">file</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libmagic">
        <term><filename class="libraryfile">libmagic</filename></term>
        <listitem>
          <para>Contains routines for magic number recognition, used by the
          <command>file</command> program</para>
          <indexterm zone="ch-system-file libmagic">
            <primary sortas="c-libmagic">libmagic</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>