lfs-book/chapter06/grep.xml

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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
  %general-entities;
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<sect1 id="ch-system-grep" role="wrap">
  <?dbhtml filename="grep.html"?>

  <title>Grep-&grep-version;</title>

  <indexterm zone="ch-system-grep">
    <primary sortas="a-Grep">Grep</primary>
  </indexterm>

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

    <para>The Grep package contains programs for searching through files.</para>

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

      <seglistitem>
        <seg>0.1 SBU</seg>
        <seg>4.5 MB</seg>
      </seglistitem>
    </segmentedlist>

    <segmentedlist>
      <segtitle>&dependencies;</segtitle>

      <seglistitem>
        <seg>Bash, Binutils, Coreutils, Diffutils, GCC, Gettext, Glibc, Make,
        Sed, and Texinfo</seg>
      </seglistitem>
    </segmentedlist>

  </sect2>

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

    <para>The current Grep package has many bugs, especially in the support of
    multibyte locales. RedHat fixed some of them with the following patch:</para>

<screen><userinput>patch -Np1 -i ../&grep-fixes-patch;</userinput></screen>

    <para>In order for the tests added by this patch to pass, the permissions for
    the test file have to be changed:</para>

<screen><userinput>chmod +x tests/fmbtest.sh</userinput></screen>

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

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

    <para>Compile the package:</para>

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

    <para>To test the results, issue:
    <userinput>make check</userinput>.</para>

    <para>Install the package:</para>

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

  </sect2>

  <sect2 id="contents-grep" role="content">
    <title>Contents of Grep</title>

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

      <seglistitem>
        <seg>egrep (link to grep), fgrep (link to grep), and grep</seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="egrep">
        <term><command>egrep</command></term>
        <listitem>
          <para>Prints lines matching an extended regular expression</para>
          <indexterm zone="ch-system-grep egrep">
            <primary sortas="b-egrep">egrep</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="fgrep">
        <term><command>fgrep</command></term>
        <listitem>
          <para>Prints lines matching a list of fixed strings</para>
          <indexterm zone="ch-system-grep fgrep">
            <primary sortas="b-fgrep">fgrep</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="grep">
        <term><command>grep</command></term>
        <listitem>
          <para>Prints lines matching a basic regular expression</para>
          <indexterm zone="ch-system-grep grep">
            <primary sortas="b-grep">grep</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>