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<span id="Group-Database-Functions-1"></span><h3 class="section">36.10 Group Database Functions</h3>
<p>Octave’s group database functions return information in a structure
with the following fields.
</p>
<dl compact="compact">
<dt><span><code>name</code></span></dt>
<dd><p>The user name.
</p>
</dd>
<dt><span><code>passwd</code></span></dt>
<dd><p>The encrypted password, if available.
</p>
</dd>
<dt><span><code>gid</code></span></dt>
<dd><p>The numeric group id.
</p>
</dd>
<dt><span><code>mem</code></span></dt>
<dd><p>The members of the group.
</p></dd>
</dl>
<p>In the descriptions of the following functions, this data structure is
referred to as a <var>grp_struct</var>.
</p>
<span id="XREFgetgrent"></span><dl class="def">
<dt id="index-getgrent"><span class="category">: </span><span><em><var>grp_struct</var> =</em> <strong>getgrent</strong> <em>()</em><a href='#index-getgrent' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return an entry from the group database, opening it if necessary.
</p>
<p>Once the end of data has been reached, <code>getgrent</code> returns 0.
</p>
<p><strong>See also:</strong> <a href="#XREFsetgrent">setgrent</a>, <a href="#XREFendgrent">endgrent</a>.
</p></dd></dl>
<span id="XREFgetgrgid"></span><dl class="def">
<dt id="index-getgrgid"><span class="category">: </span><span><em><var>grp_struct</var> =</em> <strong>getgrgid</strong> <em>(<var>gid</var>).</em><a href='#index-getgrgid' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return the first entry from the group database with the group ID
<var>gid</var>.
</p>
<p>If the group ID does not exist in the database, <code>getgrgid</code> returns 0.
</p>
<p><strong>See also:</strong> <a href="#XREFgetgrnam">getgrnam</a>.
</p></dd></dl>
<span id="XREFgetgrnam"></span><dl class="def">
<dt id="index-getgrnam"><span class="category">: </span><span><em><var>grp_struct</var> =</em> <strong>getgrnam</strong> <em>(<var>name</var>)</em><a href='#index-getgrnam' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return the first entry from the group database with the group name
<var>name</var>.
</p>
<p>If the group name does not exist in the database, <code>getgrnam</code> returns 0.
</p>
<p><strong>See also:</strong> <a href="#XREFgetgrgid">getgrgid</a>.
</p></dd></dl>
<span id="XREFsetgrent"></span><dl class="def">
<dt id="index-setgrent"><span class="category">: </span><span><em></em> <strong>setgrent</strong> <em>()</em><a href='#index-setgrent' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return the internal pointer to the beginning of the group database.
</p>
<p><strong>See also:</strong> <a href="#XREFgetgrent">getgrent</a>, <a href="#XREFendgrent">endgrent</a>.
</p></dd></dl>
<span id="XREFendgrent"></span><dl class="def">
<dt id="index-endgrent"><span class="category">: </span><span><em></em> <strong>endgrent</strong> <em>()</em><a href='#index-endgrent' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Close the group database.
</p>
<p><strong>See also:</strong> <a href="#XREFgetgrent">getgrent</a>, <a href="#XREFsetgrent">setgrent</a>.
</p></dd></dl>
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