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<div class="section" id="Password-Database-Functions">
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<p>
Next: <a href="Group-Database-Functions.html" accesskey="n" rel="next">Group Database Functions</a>, Previous: <a href="Current-Working-Directory.html" accesskey="p" rel="prev">Current Working Directory</a>, Up: <a href="System-Utilities.html" 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" title="Index" rel="index">Index</a>]</p>
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<span id="Password-Database-Functions-1"></span><h3 class="section">36.9 Password Database Functions</h3>
<p>Octave’s password 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>uid</code></span></dt>
<dd><p>The numeric user id.
</p>
</dd>
<dt><span><code>gid</code></span></dt>
<dd><p>The numeric group id.
</p>
</dd>
<dt><span><code>gecos</code></span></dt>
<dd><p>The GECOS field.
</p>
</dd>
<dt><span><code>dir</code></span></dt>
<dd><p>The home directory.
</p>
</dd>
<dt><span><code>shell</code></span></dt>
<dd><p>The initial shell.
</p></dd>
</dl>
<p>In the descriptions of the following functions, this data structure is
referred to as a <var>pw_struct</var>.
</p>
<span id="XREFgetpwent"></span><dl class="def">
<dt id="index-getpwent"><span class="category">: </span><span><em><var>pw_struct</var> =</em> <strong>getpwent</strong> <em>()</em><a href='#index-getpwent' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return a structure containing an entry from the password database,
opening it if necessary.
</p>
<p>Once the end of the data has been reached, <code>getpwent</code> returns 0.
</p>
<p><strong>See also:</strong> <a href="#XREFsetpwent">setpwent</a>, <a href="#XREFendpwent">endpwent</a>.
</p></dd></dl>
<span id="XREFgetpwuid"></span><dl class="def">
<dt id="index-getpwuid"><span class="category">: </span><span><em><var>pw_struct</var> =</em> <strong>getpwuid</strong> <em>(<var>uid</var>).</em><a href='#index-getpwuid' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return a structure containing the first entry from the password database
with the user ID <var>uid</var>.
</p>
<p>If the user ID does not exist in the database, <code>getpwuid</code> returns 0.
</p>
<p><strong>See also:</strong> <a href="#XREFgetpwnam">getpwnam</a>.
</p></dd></dl>
<span id="XREFgetpwnam"></span><dl class="def">
<dt id="index-getpwnam"><span class="category">: </span><span><em><var>pw_struct</var> =</em> <strong>getpwnam</strong> <em>(<var>name</var>)</em><a href='#index-getpwnam' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return a structure containing the first entry from the password database
with the user name <var>name</var>.
</p>
<p>If the user name does not exist in the database, <code>getpwname</code> returns 0.
</p>
<p><strong>See also:</strong> <a href="#XREFgetpwuid">getpwuid</a>.
</p></dd></dl>
<span id="XREFsetpwent"></span><dl class="def">
<dt id="index-setpwent"><span class="category">: </span><span><em></em> <strong>setpwent</strong> <em>()</em><a href='#index-setpwent' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Return the internal pointer to the beginning of the password database.
</p>
<p><strong>See also:</strong> <a href="#XREFgetpwent">getpwent</a>, <a href="#XREFendpwent">endpwent</a>.
</p></dd></dl>
<span id="XREFendpwent"></span><dl class="def">
<dt id="index-endpwent"><span class="category">: </span><span><em></em> <strong>endpwent</strong> <em>()</em><a href='#index-endpwent' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Close the password database.
</p>
<p><strong>See also:</strong> <a href="#XREFgetpwent">getpwent</a>, <a href="#XREFsetpwent">setpwent</a>.
</p></dd></dl>
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