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<a name="Process_002c-Group_002c-and-User-IDs"></a>
<h3 class="section">36.6 Process, Group, and User IDs</h3>
<a name="XREFgetpgrp"></a><dl>
<dt><a name="index-getpgrp"></a>Built-in Function: <em>pgid =</em> <strong>getpgrp</strong> <em>()</em></dt>
<dd><p>Return the process group id of the current process.
</p></dd></dl>
<a name="XREFgetpid"></a><dl>
<dt><a name="index-getpid"></a>Built-in Function: <em>pid =</em> <strong>getpid</strong> <em>()</em></dt>
<dd><p>Return the process id of the current process.
</p>
<p><strong>See also:</strong> <a href="#XREFgetppid">getppid</a>.
</p></dd></dl>
<a name="XREFgetppid"></a><dl>
<dt><a name="index-getppid"></a>Built-in Function: <em>pid =</em> <strong>getppid</strong> <em>()</em></dt>
<dd><p>Return the process id of the parent process.
</p>
<p><strong>See also:</strong> <a href="#XREFgetpid">getpid</a>.
</p></dd></dl>
<a name="XREFgeteuid"></a><dl>
<dt><a name="index-geteuid"></a>Built-in Function: <em>euid =</em> <strong>geteuid</strong> <em>()</em></dt>
<dd><p>Return the effective user id of the current process.
</p>
<p><strong>See also:</strong> <a href="#XREFgetuid">getuid</a>.
</p></dd></dl>
<a name="XREFgetuid"></a><dl>
<dt><a name="index-getuid"></a>Built-in Function: <em>uid =</em> <strong>getuid</strong> <em>()</em></dt>
<dd><p>Return the real user id of the current process.
</p>
<p><strong>See also:</strong> <a href="#XREFgeteuid">geteuid</a>.
</p></dd></dl>
<a name="XREFgetegid"></a><dl>
<dt><a name="index-getegid"></a>Built-in Function: <em>egid =</em> <strong>getegid</strong> <em>()</em></dt>
<dd><p>Return the effective group id of the current process.
</p>
<p><strong>See also:</strong> <a href="#XREFgetgid">getgid</a>.
</p></dd></dl>
<a name="XREFgetgid"></a><dl>
<dt><a name="index-getgid"></a>Built-in Function: <em>gid =</em> <strong>getgid</strong> <em>()</em></dt>
<dd><p>Return the real group id of the current process.
</p>
<p><strong>See also:</strong> <a href="#XREFgetegid">getegid</a>.
</p></dd></dl>
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