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<h3 class="section" id="Group-Database-Functions-1"><span>36.10 Group Database Functions<a class="copiable-link" href="#Group-Database-Functions-1"> ¶</a></span></h3>
<p>Octave’s group database functions return information in a structure
with the following fields.
</p>
<dl class="table">
<dt><code class="code">name</code></dt>
<dd><p>The user name.
</p>
</dd>
<dt><code class="code">passwd</code></dt>
<dd><p>The encrypted password, if available.
</p>
</dd>
<dt><code class="code">gid</code></dt>
<dd><p>The numeric group id.
</p>
</dd>
<dt><code class="code">mem</code></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 class="var">grp_struct</var>.
</p>
<a class="anchor" id="XREFgetgrent"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-getgrent"><span><code class="def-type"><var class="var">grp_struct</var> =</code> <strong class="def-name">getgrent</strong> <code class="def-code-arguments">()</code><a class="copiable-link" href="#index-getgrent"> ¶</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 class="code">getgrent</code> returns 0.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFsetgrent">setgrent</a>, <a class="ref" href="#XREFendgrent">endgrent</a>.
</p></dd></dl>
<a class="anchor" id="XREFgetgrgid"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-getgrgid"><span><code class="def-type"><var class="var">grp_struct</var> =</code> <strong class="def-name">getgrgid</strong> <code class="def-code-arguments">(<var class="var">gid</var>).</code><a class="copiable-link" href="#index-getgrgid"> ¶</a></span></dt>
<dd><p>Return the first entry from the group database with the group ID
<var class="var">gid</var>.
</p>
<p>If the group ID does not exist in the database, <code class="code">getgrgid</code> returns 0.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFgetgrnam">getgrnam</a>.
</p></dd></dl>
<a class="anchor" id="XREFgetgrnam"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-getgrnam"><span><code class="def-type"><var class="var">grp_struct</var> =</code> <strong class="def-name">getgrnam</strong> <code class="def-code-arguments">(<var class="var">name</var>)</code><a class="copiable-link" href="#index-getgrnam"> ¶</a></span></dt>
<dd><p>Return the first entry from the group database with the group name
<var class="var">name</var>.
</p>
<p>If the group name does not exist in the database, <code class="code">getgrnam</code> returns 0.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFgetgrgid">getgrgid</a>.
</p></dd></dl>
<a class="anchor" id="XREFsetgrent"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-setgrent"><span><code class="def-type">[<var class="var">status</var>, <var class="var">msg</var>] =</code> <strong class="def-name">setgrent</strong> <code class="def-code-arguments">()</code><a class="copiable-link" href="#index-setgrent"> ¶</a></span></dt>
<dd><p>Return the internal pointer to the beginning of the group database.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFgetgrent">getgrent</a>, <a class="ref" href="#XREFendgrent">endgrent</a>.
</p></dd></dl>
<a class="anchor" id="XREFendgrent"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-endgrent"><span><code class="def-type">[<var class="var">status</var>, <var class="var">msg</var>] =</code> <strong class="def-name">endgrent</strong> <code class="def-code-arguments">()</code><a class="copiable-link" href="#index-endgrent"> ¶</a></span></dt>
<dd><p>Close the group database.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFgetgrent">getgrent</a>, <a class="ref" href="#XREFsetgrent">setgrent</a>.
</p></dd></dl>
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