lfs-book-zh_CN/appendixa/diffutils-desc.xml

<sect2>
<title>Contents</title>

<para>The Diffutils package contains the cmp, diff, diff3 and sdiff programs.</para>

</sect2>

<sect2><title>Description</title>

<sect3><title>cmp and diff</title>
<para>cmp and diff both compare two files and report their differences. Both
programs have extra options which compare files in 
different situations.</para></sect3>

<sect3><title>diff3</title>
<para>The difference between diff and diff3 is that diff compares 2 files,
diff3 compares 3 files.</para></sect3>

<sect3><title>sdiff</title>
<para>sdiff merges two files and interactively outputs 
the results.</para></sect3>

</sect2>