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<html lang="en">
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<title>Filesystem Utilities - Untitled</title>
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<p>
<a name="Filesystem-Utilities"></a>
Next: <a rel="next" accesskey="n" href="File-Archiving-Utilities.html#File-Archiving-Utilities">File Archiving Utilities</a>,
Previous: <a rel="previous" accesskey="p" href="Timing-Utilities.html#Timing-Utilities">Timing Utilities</a>,
Up: <a rel="up" accesskey="u" href="System-Utilities.html#System-Utilities">System Utilities</a>
<hr>
</div>
<h3 class="section">34.2 Filesystem Utilities</h3>
<p>Octave includes the following functions for renaming and deleting files,
creating, deleting, and reading directories, and for getting information
about the status of files.
<!-- dirfns.cc -->
<p><a name="doc_002drename"></a>
<div class="defun">
— Built-in Function: [<var>err</var>, <var>msg</var>] = <b>rename</b> (<var>old, new</var>)<var><a name="index-rename-2311"></a></var><br>
<blockquote><p>Change the name of file <var>old</var> to <var>new</var>.
<p>If successful, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dls.html#doc_002dls">ls</a>, <a href="doc_002ddir.html#doc_002ddir">dir</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dlink"></a>
<div class="defun">
— Built-in Function: [<var>err</var>, <var>msg</var>] = <b>link</b> (<var>old, new</var>)<var><a name="index-link-2312"></a></var><br>
<blockquote><p>Create a new link (also known as a hard link) to an existing file.
<p>If successful, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dsymlink.html#doc_002dsymlink">symlink</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dsymlink"></a>
<div class="defun">
— Built-in Function: [<var>err</var>, <var>msg</var>] = <b>symlink</b> (<var>old, new</var>)<var><a name="index-symlink-2313"></a></var><br>
<blockquote><p>Create a symbolic link <var>new</var> which contains the string <var>old</var>.
<p>If successful, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dlink.html#doc_002dlink">link</a>, <a href="doc_002dreadlink.html#doc_002dreadlink">readlink</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dreadlink"></a>
<div class="defun">
— Built-in Function: [<var>result</var>, <var>err</var>, <var>msg</var>] = <b>readlink</b> (<var>symlink</var>)<var><a name="index-readlink-2314"></a></var><br>
<blockquote><p>Read the value of the symbolic link <var>symlink</var>.
<p>If successful, <var>result</var> contains the contents of the symbolic link
<var>symlink</var>, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dlink.html#doc_002dlink">link</a>, <a href="doc_002dsymlink.html#doc_002dsymlink">symlink</a>.
</p></blockquote></div>
<!-- syscalls.cc -->
<p><a name="doc_002dunlink"></a>
<div class="defun">
— Built-in Function: [<var>err</var>, <var>msg</var>] = <b>unlink</b> (<var>file</var>)<var><a name="index-unlink-2315"></a></var><br>
<blockquote><p>Delete the file named <var>file</var>.
<p>If successful, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dreaddir"></a>
<div class="defun">
— Built-in Function: [<var>files</var>, <var>err</var>, <var>msg</var>] = <b>readdir</b> (<var>dir</var>)<var><a name="index-readdir-2316"></a></var><br>
<blockquote><p>Return names of the files in the directory <var>dir</var> as a cell array of
strings. If an error occurs, return an empty cell array in <var>files</var>.
<p>If successful, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002ddir.html#doc_002ddir">dir</a>, <a href="doc_002dglob.html#doc_002dglob">glob</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dmkdir"></a>
<div class="defun">
— Built-in Function: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>mkdir</b> (<var>dir</var>)<var><a name="index-mkdir-2317"></a></var><br>
— Built-in Function: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>mkdir</b> (<var>parent, dir</var>)<var><a name="index-mkdir-2318"></a></var><br>
<blockquote><p>Create a directory named <var>dir</var> in the directory <var>parent</var>.
<p>If successful, <var>status</var> is 1, with <var>msg</var> and <var>msgid</var> empty
character strings. Otherwise, <var>status</var> is 0, <var>msg</var> contains a
system-dependent error message, and <var>msgid</var> contains a unique
message identifier.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002drmdir.html#doc_002drmdir">rmdir</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002drmdir"></a>
<div class="defun">
— Built-in Function: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>rmdir</b> (<var>dir</var>)<var><a name="index-rmdir-2319"></a></var><br>
— Built-in Function: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>rmdir</b> (<var>dir, </var><code>"s"</code>)<var><a name="index-rmdir-2320"></a></var><br>
<blockquote><p>Remove the directory named <var>dir</var>.
<p>If successful, <var>status</var> is 1, with <var>msg</var> and <var>msgid</var> empty
character strings. Otherwise, <var>status</var> is 0, <var>msg</var> contains a
system-dependent error message, and <var>msgid</var> contains a unique
message identifier.
<p>If the optional second parameter is supplied with value <code>"s"</code>,
recursively remove all subdirectories as well.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dmkdir.html#doc_002dmkdir">mkdir</a>, <a href="doc_002dconfirm_005frecursive_005frmdir.html#doc_002dconfirm_005frecursive_005frmdir">confirm_recursive_rmdir</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dconfirm_005frecursive_005frmdir"></a>
<div class="defun">
— Built-in Function: <var>val</var> = <b>confirm_recursive_rmdir</b> ()<var><a name="index-confirm_005frecursive_005frmdir-2321"></a></var><br>
— Built-in Function: <var>old_val</var> = <b>confirm_recursive_rmdir</b> (<var>new_val</var>)<var><a name="index-confirm_005frecursive_005frmdir-2322"></a></var><br>
<blockquote><p>Query or set the internal variable that controls whether Octave
will ask for confirmation before recursively removing a directory tree.
</p></blockquote></div>
<!-- syscalls.cc -->
<p><a name="doc_002dmkfifo"></a>
<div class="defun">
— Built-in Function: [<var>err</var>, <var>msg</var>] = <b>mkfifo</b> (<var>name, mode</var>)<var><a name="index-mkfifo-2323"></a></var><br>
<blockquote><p>Create a <var>fifo</var> special file named <var>name</var> with file mode <var>mode</var>
<p>If successful, <var>err</var> is 0 and <var>msg</var> is an empty string.
Otherwise, <var>err</var> is nonzero and <var>msg</var> contains a
system-dependent error message.
</p></blockquote></div>
<!-- file-io.cc -->
<p><a name="doc_002dumask"></a>
<div class="defun">
— Built-in Function: <b>umask</b> (<var>mask</var>)<var><a name="index-umask-2324"></a></var><br>
<blockquote><p>Set the permission mask for file creation. The parameter <var>mask</var>
is an integer, interpreted as an octal number. If successful,
returns the previous value of the mask (as an integer to be
interpreted as an octal number); otherwise an error message is printed.
</p></blockquote></div>
<p><a name="doc_002dlstat"></a><!-- syscalls.cc -->
<a name="doc_002dstat"></a>
<div class="defun">
— Built-in Function: [<var>info</var>, <var>err</var>, <var>msg</var>] = <b>stat</b> (<var>file</var>)<var><a name="index-stat-2325"></a></var><br>
— Built-in Function: [<var>info</var>, <var>err</var>, <var>msg</var>] = <b>lstat</b> (<var>file</var>)<var><a name="index-lstat-2326"></a></var><br>
<blockquote><p>Return a structure <var>s</var> containing the following information about
<var>file</var>.
<dl>
<dt><code>dev</code><dd>ID of device containing a directory entry for this file.
<br><dt><code>ino</code><dd>File number of the file.
<br><dt><code>mode</code><dd>File mode, as an integer. Use the functions <code>S_ISREG</code><!-- /@w -->,
<code>S_ISDIR</code><!-- /@w -->, <code>S_ISCHR</code><!-- /@w -->, <code>S_ISBLK</code><!-- /@w -->, <code>S_ISFIFO</code><!-- /@w -->,
<code>S_ISLNK</code><!-- /@w -->, or <code>S_ISSOCK</code><!-- /@w --> to extract information from this
value.
<br><dt><code>modestr</code><dd>File mode, as a string of ten letters or dashes as would be returned by
<kbd>ls -l</kbd>.
<br><dt><code>nlink</code><dd>Number of links.
<br><dt><code>uid</code><dd>User ID of file's owner.
<br><dt><code>gid</code><dd>Group ID of file's group.
<br><dt><code>rdev</code><dd>ID of device for block or character special files.
<br><dt><code>size</code><dd>Size in bytes.
<br><dt><code>atime</code><dd>Time of last access in the same form as time values returned from
<code>time</code>. See <a href="Timing-Utilities.html#Timing-Utilities">Timing Utilities</a>.
<br><dt><code>mtime</code><dd>Time of last modification in the same form as time values returned from
<code>time</code>. See <a href="Timing-Utilities.html#Timing-Utilities">Timing Utilities</a>.
<br><dt><code>ctime</code><dd>Time of last file status change in the same form as time values
returned from <code>time</code>. See <a href="Timing-Utilities.html#Timing-Utilities">Timing Utilities</a>.
<br><dt><code>blksize</code><dd>Size of blocks in the file.
<br><dt><code>blocks</code><dd>Number of blocks allocated for file.
</dl>
<p>If the call is successful <var>err</var> is 0 and <var>msg</var> is an empty
string. If the file does not exist, or some other error occurs, <var>s</var>
is an empty matrix, <var>err</var> is −1, and <var>msg</var> contains the
corresponding system error message.
<p>If <var>file</var> is a symbolic link, <code>stat</code> will return information
about the actual file that is referenced by the link. Use <code>lstat</code>
if you want information about the symbolic link itself.
<p>For example,
<pre class="example"> [s, err, msg] = stat ("/vmlinuz")
s =
{
atime = 855399756
rdev = 0
ctime = 847219094
uid = 0
size = 389218
blksize = 4096
mtime = 847219094
gid = 6
nlink = 1
blocks = 768
mode = -rw-r--r--
modestr = -rw-r--r--
ino = 9316
dev = 2049
}
err = 0
msg =
</pre>
</blockquote></div>
<!-- syscalls.cc -->
<p><a name="doc_002dfstat"></a>
<div class="defun">
— Built-in Function: [<var>info</var>, <var>err</var>, <var>msg</var>] = <b>fstat</b> (<var>fid</var>)<var><a name="index-fstat-2327"></a></var><br>
<blockquote><p>Return information about the open file <var>fid</var>. See <code>stat</code>
for a description of the contents of <var>info</var>.
</p></blockquote></div>
<!-- ./miscellaneous/fileattrib.m -->
<p><a name="doc_002dfileattrib"></a>
<div class="defun">
— Function File: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>fileattrib</b> (<var>file</var>)<var><a name="index-fileattrib-2328"></a></var><br>
<blockquote><p>Return information about <var>file</var>.
<p>If successful, <var>status</var> is 1, with <var>result</var> containing a
structure with the following fields:
<dl>
<dt><code>Name</code><dd>Full name of <var>file</var>.
<br><dt><code>archive</code><dd>True if <var>file</var> is an archive (Windows).
<br><dt><code>system</code><dd>True if <var>file</var> is a system file (Windows).
<br><dt><code>hidden</code><dd>True if <var>file</var> is a hidden file (Windows).
<br><dt><code>directory</code><dd>True if <var>file</var> is a directory.
<br><dt><code>UserRead</code><dt><code>GroupRead</code><dt><code>OtherRead</code><dd>True if the user (group; other users) has read permission for
<var>file</var>.
<br><dt><code>UserWrite</code><dt><code>GroupWrite</code><dt><code>OtherWrite</code><dd>True if the user (group; other users) has write permission for
<var>file</var>.
<br><dt><code>UserExecute</code><dt><code>GroupExecute</code><dt><code>OtherExecute</code><dd>True if the user (group; other users) has execute permission for
<var>file</var>.
</dl>
If an attribute does not apply (i.e., archive on a Unix system) then
the field is set to NaN.
<p>With no input arguments, return information about the current
directory.
<p>If <var>file</var> contains globbing characters, return information about
all the matching files.
<!-- Texinfo @sp should work but in practice produces ugly results for HTML. -->
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dglob.html#doc_002dglob">glob</a>.
</p></blockquote></div>
<!-- ./general/isdir.m -->
<p><a name="doc_002disdir"></a>
<div class="defun">
— Function File: <b>isdir</b> (<var>f</var>)<var><a name="index-isdir-2329"></a></var><br>
<blockquote><p>Return true if <var>f</var> is a directory.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dglob"></a>
<div class="defun">
— Built-in Function: <b>glob</b> (<var>pattern</var>)<var><a name="index-glob-2330"></a></var><br>
<blockquote><p>Given an array of strings (as a char array or a cell array) in
<var>pattern</var>, return a cell array of file names that match any of
them, or an empty cell array if no patterns match. Tilde expansion
is performed on each of the patterns before looking for matching file
names. For example,
<pre class="example"> glob ("/vm*")
"/vmlinuz"
</pre>
<!-- Texinfo @sp should work but in practice produces ugly results for HTML. -->
<!-- A simple blank line produces the correct behavior. -->
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<p class="noindent"><strong>See also:</strong> <a href="doc_002ddir.html#doc_002ddir">dir</a>, <a href="doc_002dls.html#doc_002dls">ls</a>, <a href="doc_002dstat.html#doc_002dstat">stat</a>, <a href="doc_002dreaddir.html#doc_002dreaddir">readdir</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dfnmatch"></a>
<div class="defun">
— Built-in Function: <b>fnmatch</b> (<var>pattern, string</var>)<var><a name="index-fnmatch-2331"></a></var><br>
<blockquote><p>Return 1 or zero for each element of <var>string</var> that matches any of
the elements of the string array <var>pattern</var>, using the rules of
filename pattern matching. For example,
<pre class="example"> fnmatch ("a*b", {"ab"; "axyzb"; "xyzab"})
[ 1; 1; 0 ]
</pre>
</blockquote></div>
<!-- utils.cc -->
<p><a name="doc_002dfile_005fin_005fpath"></a>
<div class="defun">
— Built-in Function: <b>file_in_path</b> (<var>path, file</var>)<var><a name="index-file_005fin_005fpath-2332"></a></var><br>
— Built-in Function: <b>file_in_path</b> (<var>path, file, "all"</var>)<var><a name="index-file_005fin_005fpath-2333"></a></var><br>
<blockquote><p>Return the absolute name of <var>file</var> if it can be found in
<var>path</var>. The value of <var>path</var> should be a colon-separated list of
directories in the format described for <code>path</code>. If no file
is found, return an empty matrix. For example,
<pre class="example"> file_in_path (EXEC_PATH, "sh")
"/bin/sh"
</pre>
<p>If the second argument is a cell array of strings, search each
directory of the path for element of the cell array and return
the first that matches.
<p>If the third optional argument <code>"all"</code> is supplied, return
a cell array containing the list of all files that have the same
name in the path. If no files are found, return an empty cell array.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dfile_005fin_005floadpath.html#doc_002dfile_005fin_005floadpath">file_in_loadpath</a>.
</p></blockquote></div>
<!-- sysdep.cc -->
<p><a name="doc_002dtilde_005fexpand"></a>
<div class="defun">
— Built-in Function: <b>tilde_expand</b> (<var>string</var>)<var><a name="index-tilde_005fexpand-2334"></a></var><br>
<blockquote><p>Performs tilde expansion on <var>string</var>. If <var>string</var> begins with a
tilde character, (‘<samp><span class="samp">~</span></samp>’), all of the characters preceding the first
slash (or all characters, if there is no slash) are treated as a
possible user name, and the tilde and the following characters up to the
slash are replaced by the home directory of the named user. If the
tilde is followed immediately by a slash, the tilde is replaced by the
home directory of the user running Octave. For example,
<pre class="example"> tilde_expand ("~joeuser/bin")
"/home/joeuser/bin"
tilde_expand ("~/bin")
"/home/jwe/bin"
</pre>
</blockquote></div>
<!-- syscalls.cc -->
<p><a name="doc_002dcanonicalize_005ffile_005fname"></a>
<div class="defun">
— Built-in Function: [<var>cname</var>, <var>status</var>, <var>msg</var>] <b>canonicalize_file_name</b> (<var>name</var>)<var><a name="index-canonicalize_005ffile_005fname-2335"></a></var><br>
<blockquote><p>Return the canonical name of file <var>name</var>.
</p></blockquote></div>
<!-- ./miscellaneous/movefile.m -->
<p><a name="doc_002dmovefile"></a>
<div class="defun">
— Function File: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>movefile</b> (<var>f1, f2</var>)<var><a name="index-movefile-2336"></a></var><br>
<blockquote><p>Move the file <var>f1</var> to the new name <var>f2</var>. The name <var>f1</var>
may contain globbing patterns. If <var>f1</var> expands to multiple file
names, <var>f2</var> must be a directory.
<p>If successful, <var>status</var> is 1, with <var>msg</var> and <var>msgid</var> empty\n\
character strings. Otherwise, <var>status</var> is 0, <var>msg</var> contains a\n\
system-dependent error message, and <var>msgid</var> contains a unique\n\
message identifier.\n\
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dglob.html#doc_002dglob">glob</a>.
</p></blockquote></div>
<!-- ./miscellaneous/copyfile.m -->
<p><a name="doc_002dcopyfile"></a>
<div class="defun">
— Function File: [<var>status</var>, <var>msg</var>, <var>msgid</var>] = <b>copyfile</b> (<var>f1, f2, force</var>)<var><a name="index-copyfile-2337"></a></var><br>
<blockquote><p>Copy the file <var>f1</var> to the new name <var>f2</var>. The name <var>f1</var>
may contain globbing patterns. If <var>f1</var> expands to multiple file
names, <var>f2</var> must be a directory. If <var>force</var> is given and equals
the string "f" the copy operation will be forced.
<p>If successful, <var>status</var> is 1, with <var>msg</var> and <var>msgid</var> empty\n\
character strings. Otherwise, <var>status</var> is 0, <var>msg</var> contains a\n\
system-dependent error message, and <var>msgid</var> contains a unique\n\
message identifier.\n\
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dglob.html#doc_002dglob">glob</a>, <a href="doc_002dmovefile.html#doc_002dmovefile">movefile</a>.
</p></blockquote></div>
<!-- ./miscellaneous/fileparts.m -->
<p><a name="doc_002dfileparts"></a>
<div class="defun">
— Function File: [<var>dir</var>, <var>name</var>, <var>ext</var>, <var>ver</var>] = <b>fileparts</b> (<var>filename</var>)<var><a name="index-fileparts-2338"></a></var><br>
<blockquote><p>Return the directory, name, extension, and version components of
<var>filename</var>.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dfullfile.html#doc_002dfullfile">fullfile</a>.
</p></blockquote></div>
<!-- dirfns.cc -->
<p><a name="doc_002dfilesep"></a>
<div class="defun">
— Built-in Function: <b>filesep</b> ()<var><a name="index-filesep-2339"></a></var><br>
— Built-in Function: <b>filesep</b> (<var>'all'</var>)<var><a name="index-filesep-2340"></a></var><br>
<blockquote><p>Return the system-dependent character used to separate directory names.
<p>If 'all' is given, the function return all valid file separators in
the form of a string. The list of file separators is system-dependent.
It is / (forward slash) under UNIX or Mac OS X, / and \ (forward and
backward slashes) under Windows.
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<p class="noindent"><strong>See also:</strong> <a href="doc_002dpathsep.html#doc_002dpathsep">pathsep</a>, <a href="doc_002ddir.html#doc_002ddir">dir</a>, <a href="doc_002dls.html#doc_002dls">ls</a>.
</p></blockquote></div>
<!-- input.cc -->
<p><a name="doc_002dfilemarker"></a>
<div class="defun">
— Built-in Function: <b>filemarker</b> ()<var><a name="index-filemarker-2341"></a></var><br>
<blockquote><p>Returns or sets the character used to separate filename from the
the subfunction names contained within the file. This can be used in
a generic manner to interact with subfunctions. For example
<pre class="example"> help (["myfunc", filemarker, "mysubfunc"])
</pre>
<p class="noindent">returns the help string associated with the sub-function <code>mysubfunc</code>
of the function <code>myfunc</code>. Another use of <code>filemarker</code> is when
debugging it allows easier placement of breakpoints within sub-functions.
For example
<pre class="example"> dbstop (["myfunc", filemarker, "mysubfunc"])
</pre>
<p class="noindent">will set a breakpoint at the first line of the subfunction <code>mysubfunc</code>.
</p></blockquote></div>
<!-- ./miscellaneous/fullfile.m -->
<p><a name="doc_002dfullfile"></a>
<div class="defun">
— Function File: <var>filename</var> = <b>fullfile</b> (<var>dir1, dir2, <small class="dots">...</small>, file</var>)<var><a name="index-fullfile-2342"></a></var><br>
<blockquote><p>Return a complete filename constructed from the given components.
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<!-- @sp 1 -->
<p class="noindent"><strong>See also:</strong> <a href="doc_002dfileparts.html#doc_002dfileparts">fileparts</a>.
</p></blockquote></div>
<!-- ./miscellaneous/tempdir.m -->
<p><a name="doc_002dtempdir"></a>
<div class="defun">
— Function File: <var>dir</var> = <b>tempdir</b> ()<var><a name="index-tempdir-2343"></a></var><br>
<blockquote><p>Return the name of the system's directory for temporary files.
</p></blockquote></div>
<!-- ./miscellaneous/tempname.m -->
<p><a name="doc_002dtempname"></a>
<div class="defun">
— Function File: filename = <b>tempname</b> ()<var><a name="index-tempname-2344"></a></var><br>
<blockquote><p>This function is an alias for <code>tmpnam</code>.
</p></blockquote></div>
<!-- file-io.cc -->
<p><a name="doc_002dP_005ftmpdir"></a>
<div class="defun">
— Built-in Function: <b>P_tmpdir</b> ()<var><a name="index-P_005ftmpdir-2345"></a></var><br>
<blockquote><p>Return the default name of the directory for temporary files on
this system. The name of this directory is system dependent.
</p></blockquote></div>
<!-- utils.cc -->
<p><a name="doc_002dis_005fabsolute_005ffilename"></a>
<div class="defun">
— Built-in Function: <b>is_absolute_filename</b> (<var>file</var>)<var><a name="index-is_005fabsolute_005ffilename-2346"></a></var><br>
<blockquote><p>Return true if <var>file</var> is an absolute filename.
</p></blockquote></div>
<!-- utils.cc -->
<p><a name="doc_002dis_005frooted_005frelative_005ffilename"></a>
<div class="defun">
— Built-in Function: <b>is_rooted_relative_filename</b> (<var>file</var>)<var><a name="index-is_005frooted_005frelative_005ffilename-2347"></a></var><br>
<blockquote><p>Return true if <var>file</var> is a rooted-relative filename.
</p></blockquote></div>
<!-- utils.cc -->
<p><a name="doc_002dmake_005fabsolute_005ffilename"></a>
<div class="defun">
— Built-in Function: <b>make_absolute_filename</b> (<var>file</var>)<var><a name="index-make_005fabsolute_005ffilename-2348"></a></var><br>
<blockquote><p>Return the full name of <var>file</var>, relative to the current directory.
</p></blockquote></div>
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