GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc.
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.
To protect your rights, we need to prevent others from denying you
these rights or asking you to surrender the rights. Therefore, you have
certain responsibilities if you distribute copies of the software, or if
you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must pass on to the recipients the same
freedoms that you received. You must make sure that they, too, receive
or can get the source code. And you must show them these terms so they
know their rights.
Developers that use the GNU GPL protect your rights with two steps:
(1) assert copyright on the software, and (2) offer you this License
giving you the freedom to copy, distribute and/or modify the software.
For the developers' and authors' protection, the GPL clearly explains
that there is no warranty for this free software. For both users' and
authors' sake, the GPL requires that modified versions be marked as
changed, so that their reputations will not be affected by problems
introduced by others.
Some devices are designed to deny users access to install or run
modified versions of the software inside them, although the manufacturer
can do so. This is fundamentally incompatible with the aim of
protecting users' freedom to install and run the software they want.
Therefore, this version of the GPL has been designed to prohibit this
practice, and we hope that other manufacturers will follow suit.
Finally, every program is threatened constantly by software patents.
Countries where software patents are a problem have been known to
protect developers by licensing their products under terms that
prevent patents from being used to restrict the freedom of users.
The precise terms and conditions for copying, distribution and
modification follow.
TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds
of works, such as semiconductor masks.
"The Program" refers to any copyrightable work licensed under this
License. Each licensee is addressed as "you". "Licensees" and
"recipients" may be individuals or organizations.
"Modify" means to copy from or adapt all or part of the work in a
fashion requiring copyright permission, other than the making of an
exact copy. The resulting work is called a "modified version" of the
earlier work or a work "based on" the earlier work.
A "covered work" means either the unmodified Program or a work based
on the Program.
"Propagate" a work means to do anything with it that, without
permission, would make you directly or indirectly liable for infringement
under applicable copyright law, except executing it on a computer or
modifying it in private. "Convey" a work means any kind of propagation
that enables other parties to make copies of the work. "Convey" does
not include making and using copies of the work for your own personal
enjoyment, if you do not convey them to others.
"Source Code" means the preferred form of the work for making
modifications to it. "Object Code" means any non-source form of a work.
A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular kind of device or service, an
interface widely used among developers working in that field.
"System Libraries" of an executable work include anything, other than
the work as a whole, that (a) is included in the normal form of packaging
a consumer product, and (b) is not a part of the work, and (c) is
necessary for running the work but is not part of the work itself.
These libraries are exempt from the Corresponding Source requirement.
"Corresponding Source" for a work in Object Code form means all the
source code needed to generate, install, and run the Object Code and to
modify the work, including scripts to control those activities.
However, it does not include the work's System Libraries, or general
purpose tools or generally available free programs that are used
unchanged in performing those activities but are not part of the work.
1. Source Code.
You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately display on each copy an appropriate copyright notice; keep
intact all notices stating that this License and any non-permissive
terms apply to the code; keep intact all notices that refer to this
License and the non-permissive terms; and give each recipient a copy
of this License along with the Program.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any terms imposed under section 7.
This notice modifies the requirement in section 4 to "keep intact
all notices".
c) You must license the entire work, as a whole, under this License
to anyone who comes into possession of a copy. This License will
therefore apply, along with any applicable section 7 terms, to the
whole of the work, and all its parts, regardless of how they are
packaged. This License gives no permission to license the work in
any other way, but it does not invalidate such permission if you
have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
user interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
2. Conveying Modified Source Code Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any terms imposed under section 7.
This notice modifies the requirement in section 4 to "keep intact
all notices".
c) You must license the entire work, as a whole, under this License
to anyone who comes into possession of a copy. This License will
therefore apply, along with any applicable section 7 terms, to the
whole of the work, and all its parts, regardless of how they are
packaged. This License gives no permission to license the work in
any other way, but it does not invalidate such permission if you
have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
user interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
3. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:
a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
(usually a CD-ROM) included with the product, or
b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer service for that product,
to give anyone who possesses the object code either a copy of
the Corresponding Source on a durable physical medium (usually a
CD-ROM) or a network address from which the Corresponding Source
can be downloaded, or
c) Convey individual copies of the object code with a copy of the
Corresponding Source on a durable physical medium (usually a
CD-ROM), or
d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to
the Corresponding Source at no charge through the same place,
or
e) Convey the object code using peer-to-peer transmission,
provided you inform other peers where the Corresponding Source is
available for download at no charge.
A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included.
4. User Products and Installation Information.
A "User Product" is either (a) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (b) anything designed or sold for
incorporation into a dwelling. In determining whether a product is a
User Product, doubtful cases are resolved in favor of it being a
User Product. For a User Product, "Installation Information" means
any methods, procedures, authorization codes, etc., required to install
and execute modified versions of the covered work in that User Product
from a copy of the Corresponding Source. The requirement to provide
Installation Information does not apply if you or a third party
conveys the object code in, or embodied in, a User Product, and the
object code is never used in a User Product, or the covered work is
not a User Product.
5. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its requirements.
"Additional permissions" that are applicable to the entire Program shall
be treated as though they were included in the original License. If
they apply only to part of the Program, they may be treated as
additional permissions for that part. When you convey a copy of a
covered work, you may at your option remove any additional permissions
from that copy, or from any part of it. (Additional permissions may be
written to include consequences of their violation.) You may add
additional permissions to the terms of the Program, if permitted by
law. However, you may not impose further restrictions on the exercise
of the rights granted or affirmed by this License, or any additional
permissions for that part.
6. Termination.
You may not propagate or convey a covered work except as expressly
provided under this License. Any attempt otherwise to propagate or
convey it is void, and will automatically terminate your rights under
this License (including any patent licenses granted under the third
paragraph of section 11). 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 termination 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
termination by some reasonable means, you do not cease all violation
within 30 days after the notification.
7. Patents.
A "patent contribution" is a contribution to a covered work that is
based on a patentable invention that the contributor holds a patent
on. "Essential patent claims" of a patent contribution are those
claims of the patent that are infringed by the work.
Each contributor to a covered work grants you a non-exclusive,
worldwide, royalty-free license under the contributor's essential
patent claims to make, use, sell, offer for sale, import and otherwise
run, modify and convey the covered work.
8. No Surrender of Others' Freedom.
If you convey a covered work, you may not impose any further
restrictions on the exercise of the rights granted or affirmed by
this License. For example, you may not impose a license requirement,
fee, or other condition on the exercise of rights granted under this
License unless such restrictions are imposed by applicable law or by
the terms of a license granting the rights.
9. Accepting Warranty Disclaimer.
THE PROGRAM IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
10. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER OR CONTRIBUTOR BE LIABLE TO YOU
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES), EVEN IF
THE COPYRIGHT HOLDER OR CONTRIBUTOR HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
11. Interpretation of Sections 8 and 9.
If the disclaimer of warranty and limitation of liability provided
above cannot be given legal effect in their entirety, local law may
apply to the part that cannot be given legal effect, with the result
that the modified terms are the closest possible to the original
meaning of the statements.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and modify under these
terms.
To do so, attach the following notices to the program. It is
safest to attach them to the beginning of each source file to most
effectively convey the exclusion of warranty; and each file should
have at least the "copyright" line and a pointer to where the full
notice is found.
shellcheck-wasm
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This program is distributed in the hope that it will be useful,
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