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+<title>pipe function</title>
+
+<head>
+<script language="JavaScript">
+</script>
+</head>
+
+<body bgcolor=#ffffcc>
+<hr>
+<center>
+<h1>pipe function </h1>
+</center>
+<hr>
+<p>
+<b>pipe</b> creates two file descriptors which can be used by
+parent and child processes to communicate data. A child process can
+be created with the <a href="fork.html">fork</a> function. 
+<p>
+<hr>
+<center>
+<table border=2 width="80%" bgcolor="ivory">
+<tr>
+<td width="80%">
+<pre>
+
+	Library:   unistd.h
+
+	Prototype: int pipe(int fd[2]);
+
+	Syntax:    int fd[2];
+		   pipe(fd);
+</pre>
+</td>
+</tr>
+</table>
+</center>
+<p>
+<hr>
+On error, pipe returns -1.<p>
+Once the pipe has been executed, the data can be transfered 
+using <a href=read.html>read</a> and
+<a href=write.html>write</a>.
+<hr>
+<h2>Notes:</h2>
+Make sure that when you <a href=read.html>read</a>
+exactly the same number of bytes that are 
+<a href=write.html>written</a>! I spend HOURS 
+trying to figure out why I was loosing data because of this feature!!
+<hr>
+<h2>Examples:</h2>
+
+<img src=../../GRAPHICS/computer.gif>
+<a href="../EXAMPLES/pipe1.c"> read and write fixed length records.</a> 
+<p>
+
+<img src=../../GRAPHICS/computer.gif>
+<a href="../EXAMPLES/pipe2.c"> read and write variable length records.</a> 
+
+<hr>
+<h2>See Also:</h2>
+
+<img src=../../GRAPHICS/whiteball.gif>
+<a href="fork.html">fork</a> <p>
+<img src=../../GRAPHICS/whiteball.gif>
+<a href="popen.html">popen</a> function.<p>
+<img src=../../GRAPHICS/whiteball.gif>
+<a href="pclose.html">pclose</a> function.<p>
+
+<img src=../../GRAPHICS/whiteball.gif>
+<a href="read.html">read</a> function.<p>
+
+<img src=../../GRAPHICS/whiteball.gif>
+<a href="write.html">write</a> function.<p>
+
+
+<p>
+
+<hr>
+<p>
+<center>
+<table border=2 width="80%" bgcolor="ivory">
+<tr align=center>
+<td width="25%">
+<a href="../cref.html">                  Top</a>
+</td><td width="25%">
+<a href="../master_index.html">          Master Index</a>
+</td><td width="25%">
+<a href="../SYNTAX/keywords.html">                 Keywords</a>
+</td><td width="25%">
+<a href="funcref.htm">      Functions</a>
+</td>
+</tr>
+</table>
+</center>
+<p>
+<hr>
+<address>Martin Leslie 
+</address><p>
+</body>
+</html>