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<h3 class="section" id="Current-Working-Directory-1"><span>36.8 Current Working Directory<a class="copiable-link" href="#Current-Working-Directory-1"> ¶</a></span></h3>
<a class="anchor" id="XREFcd"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-cd-3"><span><strong class="def-name">cd</strong> <code class="def-code-arguments"><var class="var">dir</var></code><a class="copiable-link" href="#index-cd-3"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-cd-4"><span><strong class="def-name">cd</strong><a class="copiable-link" href="#index-cd-4"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-cd-5"><span><code class="def-type"><var class="var">old_dir</var> =</code> <strong class="def-name">cd</strong><a class="copiable-link" href="#index-cd-5"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-cd-6"><span><code class="def-type"><var class="var">old_dir</var> =</code> <strong class="def-name">cd</strong> <code class="def-code-arguments">(<var class="var">dir</var>)</code><a class="copiable-link" href="#index-cd-6"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-chdir"><span><strong class="def-name">chdir</strong> <code class="def-code-arguments">…</code><a class="copiable-link" href="#index-chdir"> ¶</a></span></dt>
<dd><p>Change the current working directory to <var class="var">dir</var>.
</p>
<p>If called with no input or output arguments, the current directory is
changed to the user’s home directory (<code class="code">"~"</code>).
</p>
<p>For example,
</p>
<div class="example">
<pre class="example-preformatted">cd ~/octave
</pre></div>
<p>changes the current working directory to <samp class="file">~/octave</samp>. If the
directory does not exist, an error message is printed and the working
directory is not changed.
</p>
<p>Programming Note: <code class="code">chdir</code> is an alias for <code class="code">cd</code> and can be used with
all of the same calling formats.
</p>
<p>Compatibility Note: When called with no arguments, <small class="sc">MATLAB</small> prints the
present working directory rather than changing to the user’s home directory.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFpwd">pwd</a>, <a class="ref" href="Filesystem-Utilities.html#XREFmkdir">mkdir</a>, <a class="ref" href="Filesystem-Utilities.html#XREFrmdir">rmdir</a>, <a class="ref" href="#XREFdir">dir</a>, <a class="ref" href="#XREFls">ls</a>.
</p></dd></dl>
<a class="anchor" id="XREFls"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-ls"><span><strong class="def-name">ls</strong><a class="copiable-link" href="#index-ls"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-ls-1"><span><strong class="def-name">ls</strong> <code class="def-code-arguments"><var class="var">filenames</var></code><a class="copiable-link" href="#index-ls-1"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-ls-2"><span><strong class="def-name">ls</strong> <code class="def-code-arguments"><var class="var">options</var></code><a class="copiable-link" href="#index-ls-2"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-ls-3"><span><strong class="def-name">ls</strong> <code class="def-code-arguments"><var class="var">options</var> <var class="var">filenames</var></code><a class="copiable-link" href="#index-ls-3"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-ls-4"><span><code class="def-type"><var class="var">list</var> =</code> <strong class="def-name">ls</strong> <code class="def-code-arguments">(…)</code><a class="copiable-link" href="#index-ls-4"> ¶</a></span></dt>
<dd>
<p>List directory contents.
</p>
<p>The <code class="code">ls</code> function forwards to the <code class="code">ls</code> command if it is available.
It falls back to calling the native operating system’s directory listing
command. Available <var class="var">options</var> may vary from system to system.
</p>
<p>Filenames are subject to shell expansion if they contain any wildcard
characters ‘<samp class="samp">*</samp>’, ‘<samp class="samp">?</samp>’, ‘<samp class="samp">[]</samp>’. If these wildcard characters are
escaped with a backslash ‘<samp class="samp">\</samp>’ (e.g., ‘<samp class="samp">\*</samp>’) then they are not
treated as wildcards, but instead as the corresponding literal character.
</p>
<p>If the optional output <var class="var">list</var> is requested then <code class="code">ls</code> returns a
character array with one row for each file/directory name.
</p>
<p>Example usage on a UNIX-like system:
</p>
<div class="example">
<div class="group"><pre class="example-preformatted">ls -l
-| total 12
-| -rw-r--r-- 1 jwe users 4488 Aug 19 04:02 foo.m
-| -rw-r--r-- 1 jwe users 1315 Aug 17 23:14 bar.m
</pre></div></div>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFdir">dir</a>, <a class="ref" href="Filesystem-Utilities.html#XREFreaddir">readdir</a>, <a class="ref" href="Filesystem-Utilities.html#XREFglob">glob</a>, <a class="ref" href="Status-of-Variables.html#XREFwhat">what</a>, <a class="ref" href="Filesystem-Utilities.html#XREFstat">stat</a>, <a class="ref" href="Filesystem-Utilities.html#XREFfilesep">filesep</a>, <a class="ref" href="#XREFls_005fcommand">ls_command</a>.
</p></dd></dl>
<a class="anchor" id="XREFls_005fcommand"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-ls_005fcommand"><span><code class="def-type"><var class="var">val</var> =</code> <strong class="def-name">ls_command</strong> <code class="def-code-arguments">()</code><a class="copiable-link" href="#index-ls_005fcommand"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-ls_005fcommand-1"><span><code class="def-type"><var class="var">old_val</var> =</code> <strong class="def-name">ls_command</strong> <code class="def-code-arguments">(<var class="var">new_val</var>)</code><a class="copiable-link" href="#index-ls_005fcommand-1"> ¶</a></span></dt>
<dd><p>Query or set the shell command used by Octave’s <code class="code">ls</code> command.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFls">ls</a>.
</p></dd></dl>
<a class="anchor" id="XREFdir"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-dir-2"><span><strong class="def-name">dir</strong><a class="copiable-link" href="#index-dir-2"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-dir-3"><span><strong class="def-name">dir</strong> <code class="def-code-arguments"><var class="var">directory</var></code><a class="copiable-link" href="#index-dir-3"> ¶</a></span></dt>
<dt class="deftypefnx def-cmd-deftypefn" id="index-dir-4"><span><code class="def-type">[<var class="var">list</var>] =</code> <strong class="def-name">dir</strong> <code class="def-code-arguments">(<var class="var">directory</var>)</code><a class="copiable-link" href="#index-dir-4"> ¶</a></span></dt>
<dd><p>Display file listing for directory <var class="var">directory</var>.
</p>
<p>If <var class="var">directory</var> is not specified then list the present working directory.
</p>
<p>If a return value is requested, return a structure array with the fields
</p>
<dl class="table">
<dt>name</dt>
<dd><p>File or directory name.
</p>
</dd>
<dt>folder</dt>
<dd><p>Location of file or directory
</p>
</dd>
<dt>date</dt>
<dd><p>Timestamp of file modification (string value).
</p>
</dd>
<dt>bytes</dt>
<dd><p>File size in bytes.
</p>
</dd>
<dt>isdir</dt>
<dd><p>True if name is a directory.
</p>
</dd>
<dt>datenum</dt>
<dd><p>Timestamp of file modification as serial date number (double).
</p>
</dd>
<dt>statinfo</dt>
<dd><p>Information structure returned from <code class="code">stat</code>.
</p></dd>
</dl>
<p>If <var class="var">directory</var> is a filename, rather than a directory, then return
information about the named file. <var class="var">directory</var> may also be a list rather
than a single directory or file.
</p>
<p><var class="var">directory</var> is subject to shell expansion if it contains any wildcard
characters ‘<samp class="samp">*</samp>’, ‘<samp class="samp">?</samp>’, ‘<samp class="samp">[]</samp>’. If these wildcard characters are
escaped with a backslash ‘<samp class="samp">\</samp>’ (e.g., ‘<samp class="samp">\*</samp>’) on a POSIX platform,
then they are not treated as wildcards, but as the corresponding literal
character. On Windows, it is not possible to escape wildcard characters
because backslash ‘<samp class="samp">\</samp>’ is treated as a file separator. On Windows, use
<code class="code">ls</code> for file or folder names that contain characters that would be
treated as wildcards by <code class="code">dir</code>.
</p>
<p>Note that for symbolic links, <code class="code">dir</code> returns information about the
file that the symbolic link points to rather than the link itself. However,
if the link points to a nonexistent file, <code class="code">dir</code> returns information
about the link.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFls">ls</a>, <a class="ref" href="Filesystem-Utilities.html#XREFreaddir">readdir</a>, <a class="ref" href="Filesystem-Utilities.html#XREFglob">glob</a>, <a class="ref" href="Status-of-Variables.html#XREFwhat">what</a>, <a class="ref" href="Filesystem-Utilities.html#XREFstat">stat</a>, <a class="ref" href="Filesystem-Utilities.html#XREFlstat">lstat</a>.
</p></dd></dl>
<a class="anchor" id="XREFpwd"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-pwd"><span><code class="def-type"><var class="var">dir</var> =</code> <strong class="def-name">pwd</strong> <code class="def-code-arguments">()</code><a class="copiable-link" href="#index-pwd"> ¶</a></span></dt>
<dd><p>Return the current working directory.
</p>
<p><strong class="strong">See also:</strong> <a class="ref" href="#XREFcd">cd</a>, <a class="ref" href="#XREFdir">dir</a>, <a class="ref" href="#XREFls">ls</a>, <a class="ref" href="Filesystem-Utilities.html#XREFmkdir">mkdir</a>, <a class="ref" href="Filesystem-Utilities.html#XREFrmdir">rmdir</a>.
</p></dd></dl>
</div>
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