<html lang="en"> <head> <title>Group Database Functions - GNU Octave</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="GNU Octave"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="System-Utilities.html#System-Utilities" title="System Utilities"> <link rel="prev" href="Password-Database-Functions.html#Password-Database-Functions" title="Password Database Functions"> <link rel="next" href="System-Information.html#System-Information" title="System Information"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="Group-Database-Functions"></a> <p> Next: <a rel="next" accesskey="n" href="System-Information.html#System-Information">System Information</a>, Previous: <a rel="previous" accesskey="p" href="Password-Database-Functions.html#Password-Database-Functions">Password Database Functions</a>, Up: <a rel="up" accesskey="u" href="System-Utilities.html#System-Utilities">System Utilities</a> <hr> </div> <h3 class="section">36.10 Group Database Functions</h3> <p>Octave's group database functions return information in a structure with the following fields. <dl> <dt><code>name</code><dd>The user name. <br><dt><code>passwd</code><dd>The encrypted password, if available. <br><dt><code>gid</code><dd>The numeric group id. <br><dt><code>mem</code><dd>The members of the group. </dl> <p>In the descriptions of the following functions, this data structure is referred to as a <var>grp_struct</var>. <!-- getgrent src/DLD-FUNCTIONS/getgrent.cc --> <p><a name="doc_002dgetgrent"></a> <div class="defun"> — Loadable Function: <var>grp_struct</var> = <b>getgrent</b> ()<var><a name="index-getgrent-3318"></a></var><br> <blockquote><p>Return an entry from the group database, opening it if necessary. Once the end of data has been reached, <code>getgrent</code> returns 0. </p></blockquote></div> <!-- getgrgid src/DLD-FUNCTIONS/getgrent.cc --> <p><a name="doc_002dgetgrgid"></a> <div class="defun"> — Loadable Function: <var>grp_struct</var> = <b>getgrgid</b> (<var>gid</var>)<var>.<a name="index-getgrgid-3319"></a></var><br> <blockquote><p>Return the first entry from the group database with the group ID <var>gid</var>. If the group ID does not exist in the database, <code>getgrgid</code> returns 0. </p></blockquote></div> <!-- getgrnam src/DLD-FUNCTIONS/getgrent.cc --> <p><a name="doc_002dgetgrnam"></a> <div class="defun"> — Loadable Function: <var>grp_struct</var> = <b>getgrnam</b> (<var>name</var>)<var><a name="index-getgrnam-3320"></a></var><br> <blockquote><p>Return the first entry from the group database with the group name <var>name</var>. If the group name does not exist in the database, <code>getgrnam</code> returns 0. </p></blockquote></div> <!-- setgrent src/DLD-FUNCTIONS/getgrent.cc --> <p><a name="doc_002dsetgrent"></a> <div class="defun"> — Loadable Function: <b>setgrent</b> ()<var><a name="index-setgrent-3321"></a></var><br> <blockquote><p>Return the internal pointer to the beginning of the group database. </p></blockquote></div> <!-- endgrent src/DLD-FUNCTIONS/getgrent.cc --> <p><a name="doc_002dendgrent"></a> <div class="defun"> — Loadable Function: <b>endgrent</b> ()<var><a name="index-endgrent-3322"></a></var><br> <blockquote><p>Close the group database. </p></blockquote></div> </body></html>