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

<sect2 id="contents-sed"><title>Contents of Sed</title>

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<para>sed is a stream editor. A stream editor is used to perform basic text
transformations on an input stream (a file or input from a
pipeline).</para>

<para><emphasis>Installed program</emphasis>: sed</para>

</sect2>