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">
<title>Grep-&grep-version;</title>
<?dbhtml filename="grep.html"?>

<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>