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

<sect2><title>Contents of file-&file-contversion;</title>

<sect3><title>Program Files</title>
<para>file</para></sect3>

<sect3><title>Descriptions</title>

<sect4><title>file</title>
<para>File tests each specified file in an attempt to classify it. There are 
three sets  of  tests,  performed in this order: filesystem tests, 
magic number tests, and language tests. The first test that succeeds 
causes the file type to be printed.</para></sect4>

</sect3>

</sect2>