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rudiments 0.31-2
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<pre>
<font color="#0000ff">// Copyright (c) 2001  David Muse</font>
<font color="#0000ff">// See the file COPYING for more information</font>

<font color="#a020f0">#include </font><font color="#ff00ff">&lt;rudiments/permissions.h&gt;</font>
<font color="#a020f0">#include </font><font color="#ff00ff">&lt;rudiments/file.h&gt;</font>
<font color="#a020f0">#include </font><font color="#ff00ff">&lt;stdlib.h&gt;</font>

<font color="#a020f0">#ifdef RUDIMENTS_NAMESPACE</font>
<font color="#a52a2a"><b>using</b></font> <font color="#2e8b57"><b>namespace</b></font> rudiments;
<font color="#a020f0">#endif</font>

<font color="#2e8b57"><b>int</b></font> main(<font color="#2e8b57"><b>int</b></font> argc, <font color="#2e8b57"><b>const</b></font> <font color="#2e8b57"><b>char</b></font> **argv) {


        <font color="#0000ff">// Create a file with rw-r--r-- permissions</font>
        file    fd;
        fd.open(<font color="#ff00ff">&quot;/tmp/tempfile&quot;</font>,O_RDWR|O_CREAT,
                                permissions::evalPermString(<font color="#ff00ff">&quot;rw-r--r--&quot;</font>));
        system(<font color="#ff00ff">&quot;ls -l /tmp/tempfile&quot;</font>);


        <font color="#0000ff">// change the permissions to rw-rw-r--</font>
        permissions::setFilePermissions(fd.getFileDescriptor(),
                                permissions::evalPermString(<font color="#ff00ff">&quot;rw-rw-r--&quot;</font>));
        system(<font color="#ff00ff">&quot;ls -l /tmp/tempfile&quot;</font>);


        <font color="#0000ff">// close and delete the file</font>
        fd.close();
        file::remove(<font color="#ff00ff">&quot;/tmp/tempfile&quot;</font>);


        <font color="#0000ff">// do the same as above using different methods</font>
        fd.open(<font color="#ff00ff">&quot;/tmp/tempfile&quot;</font>,O_RDWR|O_CREAT,
                                permissions::ownerReadWrite()|
                                permissions::groupRead()|
                                permissions::othersRead());
        system(<font color="#ff00ff">&quot;ls -l /tmp/tempfile&quot;</font>);

        permissions::setFilePermissions(fd.getFileDescriptor(),
                                permissions::ownerReadWrite()|
                                permissions::groupReadWrite()|
                                permissions::othersRead());
        system(<font color="#ff00ff">&quot;ls -l /tmp/tempfile&quot;</font>);
        fd.close();
        file::remove(<font color="#ff00ff">&quot;/tmp/tempfile&quot;</font>);
}
</pre>