<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Process ID Information (GNU Octave (version 5.1.0))</title> <meta name="description" content="Process ID Information (GNU Octave (version 5.1.0))"> <meta name="keywords" content="Process ID Information (GNU Octave (version 5.1.0))"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html#Top" rel="start" title="Top"> <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="System-Utilities.html#System-Utilities" rel="up" title="System Utilities"> <link href="Environment-Variables.html#Environment-Variables" rel="next" title="Environment Variables"> <link href="Controlling-Subprocesses.html#Controlling-Subprocesses" rel="prev" title="Controlling Subprocesses"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> <link rel="stylesheet" type="text/css" href="octave.css"> </head> <body lang="en"> <a name="Process-ID-Information"></a> <div class="header"> <p> Next: <a href="Environment-Variables.html#Environment-Variables" accesskey="n" rel="next">Environment Variables</a>, Previous: <a href="Controlling-Subprocesses.html#Controlling-Subprocesses" accesskey="p" rel="prev">Controlling Subprocesses</a>, Up: <a href="System-Utilities.html#System-Utilities" accesskey="u" rel="up">System Utilities</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> </div> <hr> <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><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><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><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><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><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><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><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> </body> </html>