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<html><head><title>Sys::Syslog (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_194.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_196.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">8.195. Sys::Syslog</h2><p><a name="INDEX-1559" />Interfaces to Unix<tt class="literal">syslog(3)</tt> program. Requires the file<em class="emphasis">syslog.ph</em>, which must be created with<em class="emphasis">h2ph</em> by your system administrator. Provides thefollowing four functions.</p><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>closelog</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>closelog</pre><p>Closes the log file.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>openlog</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>openlog <em class="replaceable">ident</em>, <em class="replaceable">logopt</em>, <em class="replaceable">facility</em></pre><p>Opens the log file. Takes the following arguments:</p><dl><dt><i><em class="replaceable"><tt>ident</tt></em></i></dt><dd>Prepended to every message</p></dd><dt><i><em class="replaceable"><tt>logopt</tt></em></i></dt><dd>Logging options, containing one or more of:</p><dl><dt><b><tt class="literal">cons</tt></b></dt><dd>Writes messages to system console if they can't besent to <em class="emphasis">syslogd</em></p></dd><dt><b><tt class="literal">ndelay</tt></b></dt><dd>Opens the connection immediately</p></dd><dt><b><tt class="literal">nowait</tt></b></dt><dd>Doesn't wait for child processes before loggingmessages to the console</p></dd><dt><b><tt class="literal">pid</tt></b></dt><dd>Logs process ID</p></dd></dl></dd><dt><i><em class="replaceable"><tt>facility</tt></em></i></dt><dd>Specifies the part of the system making the log entry</p></dd></dl></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>setlogmask</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>setlogmask <em class="replaceable">mask_priority</em></pre><p>Sets log mask to <em class="replaceable">mask_priority</em> and returnsthe old mask.</p></div><div class="refentry"><table width="515" border="0" cellpadding="5"><tr><td align="left"><font size="+1"><b>syslog</b></font></td><td align="right"><i></i></td></tr></table><hr width="515" size="3" noshade="true" align="left" color="black" /><pre>syslog <em class="replaceable">priority</em>, <em class="replaceable">mask</em>, <em class="replaceable">format</em>, <em class="replaceable">args</em></pre><p>If <em class="replaceable">priority</em> and<em class="replaceable"><tt>mask</tt></em> permit, logs message formed as if by<tt class="literal">sprintf(</tt><em class="replaceable"><tt>format</tt></em>,<em class="replaceable"><tt>args</tt></em>), with the addition that<tt class="literal">%m</tt> is replaced with the current error message from<tt class="literal">$!</tt>.</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_194.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_196.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">8.194. Sys::Hostname</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">8.196. Term::Cap</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. 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