This documents the “extra” features for GNU Emacs’s Dired Mode that are provided by the file dired-x.el.
- Based on dired.texi by Sebastian Kremer <firstname.lastname@example.org>
- For dired-x.el as distributed with GNU Emacs 25.1.
Copyright © 1994–1995, 1999, 2001–2016 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with the Front-Cover Texts being “A GNU Manual”, and with the Back-Cover Texts as in (a) below. A copy of the license is included in the section entitled “GNU Free Documentation License”.
(a) The FSF’s Back-Cover Text is: “You have the freedom to copy and modify this GNU manual.”
This documents some extra features for GNU Emacs’s Dired Mode that are provided by dired-x.el (derived from Sebastian Kremer’s original dired-x.el).
|• Technical Details:|
Some features provided by Dired Extra:
- Omitting uninteresting files from Dired listing (see Omitting Files in Dired).
- Guessing shell commands in Dired buffers (see Shell Command Guessing).
- Running Dired command in non-Dired buffers (see Virtual Dired).
- Finding a file mentioned in a buffer (see Find File At Point).
- Commands using file marking (see Advanced Mark Commands).
dired-x.el binds some functions to keys in Dired Mode (see Key Index) and also binds C-x C-j and C-x 4 C-j globally to
dired-jump (see Miscellaneous Commands). Optionally, it
also binds C-x C-f and C-x 4 C-f to
respectively (see Find File At Point).
1.2 Technical Details
When dired-x.el is loaded, some standard Dired functions from
dired.el and dired-aux.el offer additional features.
dired-add-entry obeys Dired Omit mode (see Omitting Files in Dired), if it is active.
dired-initial-position respect the value of
dired-find-subdir (see Miscellaneous Commands).
dired-clean-up-after-deletion respects the value of
dired-guess-shell-command (see Shell Command Guessing) to
offer a smarter default command.
This manual describes the Dired features provided by the file dired-x.el. To take advantage of these features, you must load the file and (optionally) set some variables.
In your ~/.emacs file, or in the system-wide initialization file default.el in the site-lisp directory, put
(add-hook 'dired-load-hook (lambda () (load "dired-x") ;; Set dired-x global variables here. For example: ;; (setq dired-guess-shell-gnutar "gtar") ;; (setq dired-x-hands-off-my-keys nil) )) (add-hook 'dired-mode-hook (lambda () ;; Set dired-x buffer-local variables here. For example: ;; (dired-omit-mode 1) ))
This will load dired-x.el when Dired is first invoked (for example, when you first type C-x d).
|• Optional Installation Dired Jump:|
|• Optional Installation File At Point:|
2.1 Optional Installation Dired Jump
In order to have
(see Miscellaneous Commands) work before
dired-x have been properly loaded you should set-up an autoload
for these functions. In your .emacs file put
(autoload 'dired-jump "dired-x" "Jump to Dired buffer corresponding to current buffer." t) (autoload 'dired-jump-other-window "dired-x" "Like \\[dired-jump] (dired-jump) but in other window." t) (define-key global-map "\C-x\C-j" 'dired-jump) (define-key global-map "\C-x4\C-j" 'dired-jump-other-window)
2.2 Optional Installation File At Point
If you choose to have dired-x.el bind
find-file (see Find File At Point), then you will need to set
dired-x-hands-off-my-keys. To do this, either set it
before dired-x.el is loaded, or use M-x customize-variable,
dired-x-bind-find-file after changing the value.
(add-hook 'dired-load-hook (lambda () ;; Bind dired-x-find-file. (setq dired-x-hands-off-my-keys nil) (load "dired-x") ))
3 Omitting Files in Dired
Omitting a file means removing it from the directory listing. Omitting is useful for keeping Dired buffers free of “uninteresting” files (for instance, auto-save, auxiliary, backup, and revision control files) so that the user can concentrate on the interesting files. Like hidden files, omitted files are never seen by Dired. Omitting differs from hiding in several respects:
- Omitting works on individual files, not on directories; an entire directory cannot be omitted (though each of its files could be).
- Omitting is wholesale; if omitting is turned on for a Dired buffer, then all uninteresting files listed in that buffer are omitted. The user does not omit (or unomit) files one at a time.
- Omitting can be automatic; uninteresting file lines in the buffer can be removed before the user ever sees them.
- Marked files are never omitted.
- C-x M-o
dired-omit-mode) Toggle between displaying and omitting “uninteresting” files.
- * O
dired-mark-omitted) Mark “uninteresting” files.
|• Omitting Variables:|
|• Omitting Examples:|
|• Omitting Technical:|
3.1 Omitting Variables
The following variables can be used to customize omitting.
nil, “uninteresting” files are not listed. Uninteresting files are those whose files whose names match regexp
dired-omit-files, plus those ending with extensions in
dired-omit-extensions. C-x M-o (
dired-omit-mode) toggles its value, which is buffer-local. Put
dired-mode-hookto have omitting initially turned on in every Dired buffer (see Installation). You can then use C-x M-o to unomit in that buffer.
To enable omitting automatically only in certain directories you can add a directory local setting (see Directory Variables in The Gnu Emacs manual) for Dired mode
((dired-mode . ((dired-omit-mode . t))))
to a .dir-locals.el file in that directory. You can use the command
add-dir-local-variableto do this.
Files whose names match this buffer-local regexp will not be displayed. This only has effect when
dired-omit-mode’s value is
The default value omits the special directories . and .. and autosave files (plus other files ending in .) (see Omitting Examples).
Default: The elements of
nil, a list of extensions (strings) to omit from Dired listings. Its format is the same as that of
The localp argument
dired-get-filename. If it is
no-dir, omitting is much faster, but you can only match against the non-directory part of the file name. Set it to
nilif you need to match the whole file name or
tto match the file name relative to the buffer’s top-level directory.
Temporary marker used by Dired to implement omitting. Should never be used as marker by the user or other packages. There is one exception to this rule: by adding
(setq dired-mark-keys "\C-o") ;; i.e., the value of dired-omit-marker-char ;; (which is not defined yet)
to your ~/.emacs, you can bind the C-o key to insert a C-o marker, thus causing these files to be omitted in addition to the usually omitted files. Unfortunately the files you omitted manually this way will show up again after reverting the buffer, unlike the others.
3.2 Examples of Omitting Various File Types
If you wish to avoid seeing RCS files and the RCS directory, then put
(setq dired-omit-files (concat dired-omit-files "\\|^RCS$\\|,v$"))
dired-load-hook(see Installation). This assumes
dired-omit-localphas its default value of
no-dirto make the
^-anchored matches work. As a slower alternative, with
nil, you can use
^in the regexp.
If you use
tib, the bibliography program for use with TeX and LaTeX, and you want to omit the INDEX and the *-t.tex files, then put
(setq dired-omit-files (concat dired-omit-files "\\|^INDEX$\\|-t\\.tex$"))
If you do not wish to see ‘dot’ files (files starting with a .),
(setq dired-omit-files (concat dired-omit-files "\\|^\\..+$"))
dired-load-hook(see Installation). (Of course, a better way to achieve this particular goal is simply to omit ‘-a’ from
3.3 Some Technical Details of Omitting
Loading dired-x.el will install Dired Omit by putting
dired-omit-expunge on your
dired-after-readin-hook, and will
dired-extra-startup, which in turn calls
4 Local Variables for Dired Directories
This Dired-X feature is obsolete as of Emacs 24.1. The standard Emacs directory local variables mechanism (see Directory Variables in The Gnu Emacs manual) replaces it. For an example of the new mechanisms, see Omitting Variables.
When Dired visits a directory, it looks for a file whose name is the
value of variable
dired-local-variables-file (default: .dired).
If such a file is found, Dired will temporarily insert it into the Dired
buffer and run
For example, if the user puts
Local Variables: dired-actual-switches: "-lat" dired-omit-mode: t End:
into a file called .dired in a directory then when that directory is viewed it will be
- sorted by date
- omitted automatically
You can set
nil to suppress this.
The value of
dired-enable-local-variables controls if and how these
local variables are read. This variable exists so that it may override the
default value of
Please see the GNU Emacs Manual to learn more about local variables. See Local Variables in Files in The GNU Emacs Manual.
The following variables affect Dired Local Variables
nil, file name for local variables for Dired. If Dired finds a file with that name in the current directory, it will temporarily insert it into the Dired buffer and run
Controls the use of local-variables lists in Dired. This variable temporarily overrides the value of
enable-local-variableswhen the Dired Local Variables are hacked. It takes the same values as that variable. A value of
nilmeans to ignore any Dired Local Variables.
5 Shell Command Guessing
Based upon the name of a file, Dired tries to guess what shell command you might want to apply to it. For example, if you have point on a file named foo.tar and you press !, Dired will guess you want to ‘tar xvf’ it and suggest that as the default shell command.
The default is mentioned in brackets and you can type M-n to get the default into the minibuffer and then edit it, e.g., to change ‘tar xvf’ to ‘tar tvf’. If there are several commands for a given file, e.g., ‘xtex’ and ‘dvips’ for a .dvi file, you can type M-n several times to see each of the matching commands.
Dired only tries to guess a command for a single file, never for a list of marked files.
Predefined rules for shell commands. Set this to
nilto turn guessing off. The elements of
dired-guess-shell-alist-user(defined by the user) will override these rules.
nil, a user-defined alist of file regexps and their suggested commands. These rules take precedence over the predefined rules in the variable
dired-guess-shell-alist-default(to which they are prepended) when
Each element of the alist looks like
where each command can either be a string or a Lisp expression that evaluates to a string. If several commands are given, all of them will temporarily be pushed onto the history.
If ‘*’ in the shell command, that means to substitute the file name.
You can set this variable in your ~/.emacs. For example, to add rules for ‘.foo’ and ‘.bar’ file extensions, write
(setq dired-guess-shell-alist-user (list (list "\\.foo$" "foo-command");; fixed rule ;; possibly more rules... (list "\\.bar$";; rule with condition test '(if condition "bar-command-1" "bar-command-2"))))
This will override any predefined rules for the same extensions.
dired-guess-shell-alist-userare matched case-insensitively.
nil, this is the name of the GNU Tar executable (e.g., ‘tar’ or ‘gnutar’). GNU Tar’s ‘z’ switch is used for compressed tar files. If you don’t have GNU tar, set this to
nil: a pipe using ‘zcat’ is then used.
nilvalue means that ‘-q’ is passed to
gzipoverriding a verbose option in the
A string of switches passed to
znew. An example is ‘-K’ which will make
znewkeep a .Z file when it is smaller than the .gz file.
History list for commands that read dired-shell commands.
6 Virtual Dired
Using Virtual Dired means putting a buffer with Dired-like contents in Dired mode. The files described by the buffer contents need not actually exist. This is useful if you want to peruse an ‘ls -lR’ output file, for example one you got from an FTP server. You can use all motion commands usually available in Dired. You can also use it to save a Dired buffer in a file and resume it in a later session.
Type M-x dired-virtual to put the current buffer into virtual
Dired mode. You will be prompted for the top level directory of this
buffer, with a default value guessed from the buffer contents. To
convert the virtual to a real Dired buffer again, type g (which
dired-virtual-revert) in the virtual Dired buffer and
answer ‘y’. You don’t have to do this, though: you can relist
single subdirectories using l (
dired-do-redisplay) on the subdirectory
headerline, leaving the buffer in virtual Dired mode all the time.
The function ‘dired-virtual-mode’ is specially designed to turn on
virtual Dired mode from the
auto-mode-alist. To edit all
*.dired files automatically in virtual Dired mode, put this into your
(setq auto-mode-alist (cons '("[^/]\\.dired$" . dired-virtual-mode) auto-mode-alist))
The regexp is a bit more complicated than usual to exclude .dired local-variable files.
7 Advanced Mark Commands
dired-do-find-marked-files) Find all marked files at once displaying them simultaneously. If optional noselect is non-
nilthen just find the files but do not select. If you want to keep the Dired buffer displayed, type C-x 2 first. If you want just the marked files displayed and nothing else, type C-x 1 first.
The current window is split across all files marked, as evenly as possible. Remaining lines go to the bottom-most window. The number of files that can be displayed this way is restricted by the height of the current window and the variable
Mark all files with a certain extension for use in later commands. A ‘.’ is not automatically prepended to the string entered, you must type it explicitly.
When called from Lisp, extension may also be a list of extensions and an optional argument marker-char specifies the marker used.
Flag all files with a certain extension for deletion. A ‘.’ is not automatically prepended to the string entered.
|• Advanced Cleaning Functions:|
|• Advanced Cleaning Variables:|
|• Special Marking Function:|
7.1 Advanced Cleaning Functions
Flag dispensable files created by the ‘patch’ program for deletion. See variable
Flag dispensable files created by TeX, LaTeX, and ‘texinfo’ for deletion. See the following variables (see Advanced Cleaning Variables):
Flag dispensable files created by TeX, LaTeX, ‘texinfo’, and *.dvi files for deletion.
7.2 Advanced Cleaning Variables
Variables used by the above cleaning commands (and in the default value for
dired-omit-extensions, see Omitting Variables)
List of extensions of dispensable files created by the ‘patch’ program.
(".toc" ".log" ".aux")
List of extensions of dispensable files created by TeX.
(".cp" ".cps" ".fn" ".fns" ".ky" ".kys"
".pg" ".pgs" ".tp" ".tps" ".vr" ".vrs")
List of extensions of dispensable files created by ‘texinfo’.
(".idx" ".lof" ".lot" ".glo")
List of extensions of dispensable files created by LaTeX.
List of extensions of dispensable files created by BibTeX.
7.3 Special Marking Function
dired-mark-sexp) Mark files for which predicate returns non-
nil. With a prefix argument, unflag those files instead.
The predicate is a Lisp expression that can refer to the following symbols:
[integer] the inode of the file (only for ‘ls -i’ output)
[integer] the size of the file for ‘ls -s’ output (usually in blocks or, with ‘-k’, in KBytes)
[string] file permission bits, e.g., ‘-rw-r--r--’
[integer] number of links to file
[string] group (If the gid is not displayed by ‘ls’, this will still be set (to the same as uid))
[integer] file size in bytes
[string] the time that ‘ls’ displays, e.g., ‘Feb 12 14:17’
[string] the name of the file
[string] if file is a symbolic link, the linked-to name, else
For example, use
(equal 0 size)
to mark all zero length files.
To find out all not yet compiled Emacs Lisp files in a directory, Dired all .el files in the lisp directory using the wildcard ‘*.el’. Then use M-( with
(not (file-exists-p (concat name "c")))
to mark all .el files without a corresponding .elc file.
8 Multiple Dired Directories and Non-Dired Commands
An Emacs buffer can have but one working directory, stored in the
default-directory. A Dired buffer may have
several subdirectories inserted, but it still has only one working
directory: that of the top-level Dired directory in that buffer. For
some commands it is appropriate that they use the current Dired
directory instead of
dired-smart-shell-command, bound to M-! in
Dired buffers, is like
shell-command, but it runs with
default-directory bound to the current Dired directory.
9 Find File At Point
dired-x provides a method of visiting or editing a file mentioned in the buffer you are viewing (e.g., a mail buffer, a news article, a README file, etc.) or to test if that file exists. You can then modify this in the minibuffer after snatching the file name.
When installed dired-x will substitute
find-file (normally bound to C-x C-f) and
(normally bound to C-x 4 C-f).
In order to use this feature, you will need to set
(see Optional Installation File At Point).
dired-x-find-filebehaves exactly like
find-file(normally bound to C-x C-f) unless a prefix argument is passed to the function in which case it will use the file name at point as a guess for the file to visit.
For example, if the buffer you were reading contained the words
Available via anonymous ftp in /roebling.poly.edu:/pub/lisp/crypt++.el.gz
then you could move your cursor to the line containing the ftp address and type C-u C-x C-f (the C-u is a universal argument). The minibuffer would read
Find file: /roebling.poly.edu:/pub/lisp/crypt++.el.gz
with the point after the last
/. If you hit RET, emacs will visit the file at that address. This also works with files on your own computer.
dired-x-find-file-other-windowbehaves exactly like
find-file-other-window(normally bound to C-x 4 C-f) unless a prefix argument is used. See
dired-x-find-filefor more information.
If set to
t, then it means that dired-x should not bind
find-fileon keyboard. Similarly, it should not bind
find-file-other-window. If you change this variable after dired-x.el is loaded then do M-x dired-x-bind-find-file. The default value of this variable is
t; by default, the binding is not done. See See Optional Installation File At Point.
A function, which can be called interactively or in your ~/.emacs file, that uses the value of
dired-x-hands-off-my-keysto determine if
dired-x-find-fileshould be bound over
find-file-other-window. See See Optional Installation File At Point.
10 Miscellaneous Commands
Miscellaneous features not fitting anywhere else:
nil, Dired does not make a new buffer for a directory if it can be found (perhaps as subdirectory) in some existing Dired buffer.
If there are several Dired buffers for a directory, the most recently used is chosen.
Dired avoids switching to the current buffer, so that if you have a normal and a wildcard buffer for the same directory, C-x d RET will toggle between those two.
dired-goto-subdir) Go to the header line of an inserted directory. This command reads its argument, with completion derived from the names of the inserted subdirectories.
Bound to C-x C-j. Jump back to Dired: If in a file, edit the current directory and move to file’s line. If in Dired already, pop up a level and go to old directory’s line. In case the proper Dired file line cannot be found, refresh the Dired buffer and try again.
Bound to C-x 4 C-j. Like
dired-jump, but to other window.
These functions can be autoloaded so they work even though dired-x.el has not been loaded yet (see Optional Installation Dired Jump).
If the variable
dired-jumpwill not be bound to C-x C-j and
dired-jump-other-windowwill not be bound to C-x 4 C-j.
Bound to V if
t. Run VM on this file (assumed to be a UNIX mail folder).
If you give this command a prefix argument, it will visit the folder read-only.
If the variable
dired-vmwill visit all folders read-only. If it is neither
t, e.g., the symbol
if-file-read-only, only files not writable by you are visited read-only.
If the variable
dired-vmwill be bound to V. Otherwise,
dired-bind-rmailwill be bound.
Bound to V if
nil. Run Rmail on this file (assumed to be mail folder in Rmail format).
Bound to I. Run Info on this file (assumed to be a file in Info format).
If the variable
dired-infowill not be bound to I.
Bound to N. Run man on this file (assumed to be a file in
If the variable
dired-manwill not be bound to N.
Bound to Y. Relative symlink all marked (or next ARG) files into a directory, or make a relative symbolic link to the current file. This creates relative symbolic links like
foo -> ../bar/foo
not absolute ones like
foo -> /ugly/path/that/may/change/any/day/bar/foo
Bound to %Y. Relative symlink all marked files containing regexp to newname. See functions
dired-do-relsymlinkfor more info.
If you encounter a bug in this package, or wish to suggest an enhancement, then please use M-x report-emacs-bug to report it.
Appendix A GNU Free Documentation License
Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. http://fsf.org/ Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
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This License is a kind of “copyleft”, which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software.
We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference.
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- State on the Title page the name of the publisher of the Modified Version, as the publisher.
- Preserve all the copyright notices of the Document.
- Add an appropriate copyright notice for your modifications adjacent to the other copyright notices.
- Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below.
- Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document’s license notice.
- Include an unaltered copy of this License.
- Preserve the section Entitled “History”, Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page. If there is no section Entitled “History” in the Document, create one stating the title, year, authors, and publisher of the Document as given on its Title Page, then add an item describing the Modified Version as stated in the previous sentence.
- Preserve the network location, if any, given in the Document for public access to a Transparent copy of the Document, and likewise the network locations given in the Document for previous versions it was based on. These may be placed in the “History” section. You may omit a network location for a work that was published at least four years before the Document itself, or if the original publisher of the version it refers to gives permission.
- For any section Entitled “Acknowledgements” or “Dedications”, Preserve the Title of the section, and preserve in the section all the substance and tone of each of the contributor acknowledgements and/or dedications given therein.
- Preserve all the Invariant Sections of the Document, unaltered in their text and in their titles. Section numbers or the equivalent are not considered part of the section titles.
- Delete any section Entitled “Endorsements”. Such a section may not be included in the Modified Version.
- Do not retitle any existing section to be Entitled “Endorsements” or to conflict in title with any Invariant Section.
- Preserve any Warranty Disclaimers.
If the Modified Version includes new front-matter sections or appendices that qualify as Secondary Sections and contain no material copied from the Document, you may at your option designate some or all of these sections as invariant. To do this, add their titles to the list of Invariant Sections in the Modified Version’s license notice. These titles must be distinct from any other section titles.
You may add a section Entitled “Endorsements”, provided it contains nothing but endorsements of your Modified Version by various parties—for example, statements of peer review or that the text has been approved by an organization as the authoritative definition of a standard.
You may add a passage of up to five words as a Front-Cover Text, and a passage of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts in the Modified Version. Only one passage of Front-Cover Text and one of Back-Cover Text may be added by (or through arrangements made by) any one entity. If the Document already includes a cover text for the same cover, previously added by you or by arrangement made by the same entity you are acting on behalf of, you may not add another; but you may replace the old one, on explicit permission from the previous publisher that added the old one.
The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modified Version.
- COMBINING DOCUMENTS
You may combine the Document with other documents released under this License, under the terms defined in section 4 above for modified versions, provided that you include in the combination all of the Invariant Sections of all of the original documents, unmodified, and list them all as Invariant Sections of your combined work in its license notice, and that you preserve all their Warranty Disclaimers.
The combined work need only contain one copy of this License, and multiple identical Invariant Sections may be replaced with a single copy. If there are multiple Invariant Sections with the same name but different contents, make the title of each such section unique by adding at the end of it, in parentheses, the name of the original author or publisher of that section if known, or else a unique number. Make the same adjustment to the section titles in the list of Invariant Sections in the license notice of the combined work.
In the combination, you must combine any sections Entitled “History” in the various original documents, forming one section Entitled “History”; likewise combine any sections Entitled “Acknowledgements”, and any sections Entitled “Dedications”. You must delete all sections Entitled “Endorsements.”
- COLLECTIONS OF DOCUMENTS
You may make a collection consisting of the Document and other documents released under this License, and replace the individual copies of this License in the various documents with a single copy that is included in the collection, provided that you follow the rules of this License for verbatim copying of each of the documents in all other respects.
You may extract a single document from such a collection, and distribute it individually under this License, provided you insert a copy of this License into the extracted document, and follow this License in all other respects regarding verbatim copying of that document.
- AGGREGATION WITH INDEPENDENT WORKS
A compilation of the Document or its derivatives with other separate and independent documents or works, in or on a volume of a storage or distribution medium, is called an “aggregate” if the copyright resulting from the compilation is not used to limit the legal rights of the compilation’s users beyond what the individual works permit. When the Document is included in an aggregate, this License does not apply to the other works in the aggregate which are not themselves derivative works of the Document.
If the Cover Text requirement of section 3 is applicable to these copies of the Document, then if the Document is less than one half of the entire aggregate, the Document’s Cover Texts may be placed on covers that bracket the Document within the aggregate, or the electronic equivalent of covers if the Document is in electronic form. Otherwise they must appear on printed covers that bracket the whole aggregate.
Translation is considered a kind of modification, so you may distribute translations of the Document under the terms of section 4. Replacing Invariant Sections with translations requires special permission from their copyright holders, but you may include translations of some or all Invariant Sections in addition to the original versions of these Invariant Sections. You may include a translation of this License, and all the license notices in the Document, and any Warranty Disclaimers, provided that you also include the original English version of this License and the original versions of those notices and disclaimers. In case of a disagreement between the translation and the original version of this License or a notice or disclaimer, the original version will prevail.
If a section in the Document is Entitled “Acknowledgements”, “Dedications”, or “History”, the requirement (section 4) to Preserve its Title (section 1) will typically require changing the actual title.
You may not copy, modify, sublicense, or distribute the Document except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense, or distribute it is void, and will automatically terminate your rights under this License.
However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, receipt of a copy of some or all of the same material does not give you any rights to use it.
- FUTURE REVISIONS OF THIS LICENSE
The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See http://www.gnu.org/copyleft/.
Each version of the License is given a distinguishing version number. If the Document specifies that a particular numbered version of this License “or any later version” applies to it, you have the option of following the terms and conditions either of that specified version or of any later version that has been published (not as a draft) by the Free Software Foundation. If the Document does not specify a version number of this License, you may choose any version ever published (not as a draft) by the Free Software Foundation. If the Document specifies that a proxy can decide which future versions of this License can be used, that proxy’s public statement of acceptance of a version permanently authorizes you to choose that version for the Document.
“Massive Multiauthor Collaboration Site” (or “MMC Site”) means any World Wide Web server that publishes copyrightable works and also provides prominent facilities for anybody to edit those works. A public wiki that anybody can edit is an example of such a server. A “Massive Multiauthor Collaboration” (or “MMC”) contained in the site means any set of copyrightable works thus published on the MMC site.
“CC-BY-SA” means the Creative Commons Attribution-Share Alike 3.0 license published by Creative Commons Corporation, a not-for-profit corporation with a principal place of business in San Francisco, California, as well as future copyleft versions of that license published by that same organization.
“Incorporate” means to publish or republish a Document, in whole or in part, as part of another Document.
An MMC is “eligible for relicensing” if it is licensed under this License, and if all works that were first published under this License somewhere other than this MMC, and subsequently incorporated in whole or in part into the MMC, (1) had no cover texts or invariant sections, and (2) were thus incorporated prior to November 1, 2008.
The operator of an MMC Site may republish an MMC contained in the site under CC-BY-SA on the same site at any time before August 1, 2009, provided the MMC is eligible for relicensing.
ADDENDUM: How to use this License for your documents
To use this License in a document you have written, include a copy of the License in the document and put the following copyright and license notices just after the title page:
Copyright (C) year your name. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''.
If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace the “with…Texts.” line with this:
with the Invariant Sections being list their titles, with the Front-Cover Texts being list, and with the Back-Cover Texts being list.
If you have Invariant Sections without Cover Texts, or some other combination of the three, merge those two alternatives to suit the situation.
If your document contains nontrivial examples of program code, we recommend releasing these examples in parallel under your choice of free software license, such as the GNU General Public License, to permit their use in free software.
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