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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html> <head>
<title>Netpbm subroutine library: pm_tmpfile_fd() function</title>
<meta name="manual_section" content="3">
</head>
<body>
<h1>pm_tmpfile_fd()</h1>
Updated: 31 December 2007
<br>
<h2>NAME</h2>
pm_tmpfile_fd() - create a temporary unnamed file
<h2>SYNOPSIS</h2>
<pre>
#include <netpbm/pm.h>
FILE *
pm_tmpfile_fd(void);
</pre>
<h2>EXAMPLE</h2>
<p>This simple example creates a temporary file, writes "hello
world" to it, then reads back and prints those contents.
<pre>
#include <netpbm/pm.h>
int fd;
fd = pm_tmpfile();
write(fd, "hello world\n", 17);
lseek(fd, 0, SEEK_SET);
read(fd, buffer, sizeof(buffer));
fprintf(STDOUT, "temp file contains '%s'\n", buffer);
close(fd);
</pre>
<h2>DESCRIPTION</H2>
<p>This library function is part of <a href="index.html">Netpbm</a>.
<p><b>pm_tmpfile_fd()</b> is analogous to <a
href="libtmpfile.html"><b>pm_tmpfile()</b></a>. The only difference is
that it opens the file as a low level file, as <b>open()</b> would,
rather than as a stream, as <b>fopen()</b> would.
<p>If you need to refer to the temporary file by name, use
<b>pm_make_tmpfile_fd()</b> instead.
<h2>HISTORY</h2>
<p><b>pm_tmpfile()</b> was introduced in Netpbm 10.42 (March 2008).
</body>
</html>
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