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<link href="Signals.html#Signals" rel="up" title="Signals">
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<a name="psignal"></a>
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<p>
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Next: <a href="raise.html#raise" accesskey="n" rel="next">raise</a>, Up: <a href="Signals.html#Signals" accesskey="u" rel="up">Signals</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="psignal_002d_002d_002dprint-a-signal-message-on-standard-error"></a>
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<h3 class="section">7.1 <code>psignal</code>—print a signal message on standard error</h3>
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<a name="index-psignal"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <stdio.h>
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void psignal(int <var>signal</var>, const char *<var>prefix</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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Use <code>psignal</code> to print (on standard error) a signal message
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corresponding to the value of the signal number <var>signal</var>.
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Unless you use <code>NULL</code> as the value of the argument <var>prefix</var>, the
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signal message will begin with the string at <var>prefix</var>, followed by a
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colon and a space (<code>: </code>). The remainder of the signal message is one
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of the strings described for <code>strsignal</code>.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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<code>psignal</code> returns no result.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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POSIX.1-2008 requires <code>psignal</code>, but the strings issued vary from one
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implementation to another.
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</p>
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<p>Supporting OS subroutines required: <code>close</code>, <code>fstat</code>, <code>isatty</code>,
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<code>lseek</code>, <code>read</code>, <code>sbrk</code>, <code>write</code>.
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