lfs-book-zh_CN/appendixa/grep-shortdesc.xml

<sect2><title>Contents of Grep</title>

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<para>Grep is a program used to print lines from a file matching a
specified pattern.</para>

<para><emphasis>Installed programs</emphasis>: egrep (link to grep), fgrep
(link to grep) and grep</para>

</sect2>