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<html><head><title>File::stat (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_108.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch08_110.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">8.109. File::stat</h2><p><a name="INDEX-1456" />Provides the same file statusinformation as the Perl functions <tt class="literal">stat</tt> and<tt class="literal">lstat</tt>. Exports two functions that returnFile::stat objects. The objects have methods that return theequivalent fields from the Unix <em class="emphasis">stat(2)</em> call:</p><a name="ch08-275-fm2xml" /><table border="1" cellpadding="3"><tr><th><p>Field</p></th><th><p>Meaning</p></th></tr><tr><td><p><tt class="literal">dev</tt></p></td><td><p>Device number of filesystem</p></td></tr><tr><td><p><tt class="literal">ino</tt></p></td><td><p>Inode number</p></td></tr><tr><td><p><tt class="literal">mode</tt></p></td><td><p>File mode</p></td></tr><tr><td><p><tt class="literal">nlink</tt></p></td><td><p>Number of links to the file</p></td></tr><tr><td><p><tt class="literal">uid</tt></p></td><td><p>Numeric user ID of owner</p></td></tr><tr><td><p><tt class="literal">gid</tt></p></td><td><p>Numeric group ID of owner</p></td></tr><tr><td><p><tt class="literal">rdev</tt></p></td><td><p>Device identifier</p></td></tr><tr><td><p><tt class="literal">size</tt></p></td><td><p>Size of file, in bytes</p></td></tr><tr><td><p><tt class="literal">atime</tt></p></td><td><p>Last access time</p></td></tr><tr><td><p><tt class="literal">mtime</tt></p></td><td><p>Last modified time</p></td></tr><tr><td><p><tt class="literal">ctime</tt></p></td><td><p>Inode change time</p></td></tr><tr><td><p><tt class="literal">blksize</tt></p></td><td><p>Preferred blocksize for filesystem I/O</p></td></tr><tr><td><p><tt class="literal">blocks</tt></p></td><td><p>Number of blocks allocated</p></td></tr></table><p><p>You can access the status fields either with the methods or byimporting the fields into your namespace with the :FIELDS import tagand then accessing them by prepending <tt class="literal">st_</tt> to thefield name (e.g., <tt class="literal">$st_mode</tt>). Here are examples ofdoing it both ways:</p><blockquote><pre class="code">use File::stat;$stats = stat($file);print $stats->uid;print $st_uid;</pre></blockquote><a name="INDEX-1457" /><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>lstat</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>lstat (<em class="replaceable">file</em>)</pre><p>Returns the same information as <tt class="literal">stat</tt>, but if<em class="replaceable"><tt>file</tt></em> is a symbolic link, returns thestatus information for the link.<a name="INDEX-1457" /> </p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>stat</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>stat (<em class="replaceable">file</em>)</pre><p>Returns status information for the file or filehandle pointed to by<em class="replaceable"><tt>file</em>. If <em class="replaceable">file</tt></em>is a symbolic link, returns the information for the file that thelink points to.</p></div><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_108.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch08_110.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">8.108. File::Spec::Win32</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">8.110. File::Temp</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"><area shape="rect" coords="1,0,85,94" href="../index.htm"><area shape="rect" coords="86,1,178,103" href="../lwp/index.htm"><area shape="rect" coords="180,0,265,103" href="../lperl/index.htm"><area shape="rect" coords="267,0,353,105" href="../perlnut/index.htm"><area shape="rect" coords="354,1,446,115" href="../prog/index.htm"><area shape="rect" coords="448,0,526,132" href="../tk/index.htm"><area shape="rect" coords="528,1,615,119" href="../cookbook/index.htm"><area shape="rect" coords="617,0,690,135" href="../pxml/index.htm"></map></body></html>⌨️ 快捷键说明
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