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<html><head><title>File::Temp (Programming Perl)</title><!-- STYLESHEET --><link rel="stylesheet" type="text/css" href="../style/style1.css"><!-- METADATA --><!--Dublin Core Metadata--><meta name="DC.Creator" content=""><meta name="DC.Date" content=""><meta name="DC.Format" content="text/xml" scheme="MIME"><meta name="DC.Generator" content="XSLT stylesheet, xt by James Clark"><meta name="DC.Identifier" content=""><meta name="DC.Language" content="en-US"><meta name="DC.Publisher" content="O'Reilly & Associates, Inc."><meta name="DC.Source" content="" scheme="ISBN"><meta name="DC.Subject.Keyword" content=""><meta name="DC.Title" content="File::Temp"><meta name="DC.Type" content="Text.Monograph"></head><body><!-- START OF BODY --><!-- TOP BANNER --><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home"><map name="banner-map"><AREA SHAPE="RECT" COORDS="0,0,466,71" HREF="index.htm" ALT="Programming Perl"><AREA SHAPE="RECT" COORDS="467,0,514,18" HREF="jobjects/fsearch.htm" ALT="Search this book"></map><!-- TOP NAV BAR --><div class="navbar"><table width="515" border="0"><tr><td align="left" valign="top" width="172"><a href="ch32_24.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0"></a></td><td align="center" valign="top" width="171"><a href="ch32_01.htm">Chapter 32: Standard Modules</a></td><td align="right" valign="top" width="172"><a href="ch32_26.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0"></a></td></tr></table></div><hr width="515" align="left"><!-- SECTION BODY --><h2 class="sect1">32.25. File::Temp</h2><p><blockquote><pre class="programlisting">use File::Temp qw(tempfile tempdir);$dir = tempdir(CLEANUP => 1);($fh, $filename) = tempfile(DIR => $dir);($fh, $filename) = tempfile($template, DIR => $dir);($fh, $filename) = tempfile($template, SUFFIX => ".data");$fh = tempfile();use File::Temp ':mktemp';($fh, $filename) = mkstemp("tmpfileXXXXX");($fh, $filename) = mkstemps("tmpfileXXXXXX", $suffix);$tmpdir = mkdtemp($template);$unopened_file = mktemp($template);</pre></blockquote>New to version 5.6.1 of Perl, the <tt class="literal">File::Temp</tt> moduleprovides convenient functions for creating and opening temporary filessecurely. It's better to use this module than to try to pick atemporary file on your own. Otherwise, you'll just fall into all thesame traps as everyone else before you. This module guards youagainst various subtle race conditions, as well as the dangers ofusing directories that others can write to; see <a href="ch23_01.htm">Chapter 23, "Security"</a>. The <tt class="literal">tempfile</tt>function returns both a filehandle and filename. It's safest to usethe filehandle that's already open and ignore the filename entirely(except perhaps for error messages). Once the file is closed, it isautomatically deleted. For compatibility with the C library, the<tt class="literal">:mktemp</tt> import tag provides access to functionswith names familiar to C programmers, but please remember thatfilenames are always less secure than filehandles.</p><!-- BOTTOM NAV BAR --><hr width="515" align="left"><div class="navbar"><table width="515" border="0"><tr><td align="left" valign="top" width="172"><a href="ch32_24.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0"></a></td><td align="center" valign="top" width="171"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0"></a></td><td align="right" valign="top" width="172"><a href="ch32_26.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0"></a></td></tr><tr><td align="left" valign="top" width="172">32.24. File::stat</td><td align="center" valign="top" width="171"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0"></a></td><td align="right" valign="top" width="172">32.26. FileHandle</td></tr></table></div><hr width="515" align="left"><!-- LIBRARY NAV BAR --><img src="../gifs/smnavbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links"><p><font size="-1"><a href="copyrght.htm">Copyright © 2001</a> O'Reilly & Associates. All rights reserved.</font></p><map name="library-map"> <area shape="rect" coords="2,-1,79,99" href="../index.htm"><area shape="rect" coords="84,1,157,108" href="../perlnut/index.htm"><area shape="rect" coords="162,2,248,125" href="../prog/index.htm"><area shape="rect" coords="253,2,326,130" href="../advprog/index.htm"><area shape="rect" coords="332,1,407,112" href="../cookbook/index.htm"><area shape="rect" coords="414,2,523,103" href="../sysadmin/index.htm"></map><!-- END OF BODY --></body></html>⌨️ 快捷键说明
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