lfs-book-zh_CN/chapter06/diffutils.xml

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<sect1 id="ch-system-diffutils" role="wrap">
<title>Diffutils-&diffutils-version;</title>
<?dbhtml filename="diffutils.html"?>

<indexterm zone="ch-system-diffutils"><primary sortas="a-Diffutils">Diffutils</primary></indexterm>

<sect2 role="package"><title/>
<para>The Diffutils package contains programs that show the differences
between files or directories.</para>

<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem><seg>0.1 SBU</seg><seg>5.6 MB</seg></seglistitem>
</segmentedlist>

<segmentedlist>
<segtitle>&dependencies;</segtitle>
<seglistitem><seg>Bash, Binutils, Coreutils, Diffutils, GCC,
Gettext, Glibc, Grep, Make, and Sed</seg></seglistitem>
</segmentedlist>
</sect2>

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

<para>POSIX requires the <command>diff</command> command to treat whitespace
characters according to the current locale. The following patch fixes the
non-compliance issue:</para>

<screen><userinput>patch -Np1 -i ../&diffutils-i18n-patch;</userinput></screen>

<para>Prepare Diffutils 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-diffutils" role="content"><title>Contents of Diffutils</title>

<segmentedlist>
<segtitle>Installed programs</segtitle>
<seglistitem><seg>cmp, diff, diff3, and sdiff</seg></seglistitem>
</segmentedlist>

<variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
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<varlistentry id="cmp">
<term><command>cmp</command></term>
<listitem>
<para>Compares two files and reports whether or in which bytes they differ</para>
<indexterm zone="ch-system-diffutils cmp"><primary sortas="b-cmp">cmp</primary></indexterm>
</listitem>
</varlistentry>

<varlistentry id="diff">
<term><command>diff</command></term>
<listitem>
<para>Compares two files or directories and reports which lines in the files differ</para>
<indexterm zone="ch-system-diffutils diff"><primary sortas="b-diff">diff</primary></indexterm>
</listitem>
</varlistentry>

<varlistentry id="diff3">
<term><command>diff3</command></term>
<listitem>
<para>Compares three files line by line</para>
<indexterm zone="ch-system-diffutils diff3"><primary sortas="b-diff3">diff3</primary></indexterm>
</listitem>
</varlistentry>

<varlistentry id="sdiff">
<term><command>sdiff</command></term>
<listitem>
<para>Merges two files and interactively outputs the results</para>
<indexterm zone="ch-system-diffutils sdiff"><primary sortas="b-sdiff">sdiff</primary></indexterm>
</listitem>
</varlistentry>
</variablelist>

</sect2>

</sect1>