339 lines
19 KiB
Plaintext
339 lines
19 KiB
Plaintext
GNU GENERAL PUBLIC LICENSE
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Version 2, June 1991
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Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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Everyone is permitted to copy and distribute verbatim copies of this license
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document, but changing it is not allowed.
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Preamble
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The licenses for most software are designed to take away your freedom to share
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and change it. By contrast, the GNU General Public License is intended to
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guarantee your freedom to share and change free software--to make sure the
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software is free for all its users. This General Public License applies to
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most of the Free Software Foundation's software and to any other program whose
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authors commit to using it. (Some other Free Software Foundation software
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is covered by the GNU Lesser General Public License instead.) You can apply
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it to your programs, too.
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When we speak of free software, we are referring to freedom, not price. Our
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General Public Licenses are designed to make sure that you have the freedom
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to distribute copies of free software (and charge for this service if you
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wish), that you receive source code or can get it if you want it, that you
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can change the software or use pieces of it in new free programs; and that
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you know you can do these things.
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To protect your rights, we need to make restrictions that forbid anyone to
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deny you these rights or to ask you to surrender the rights. These restrictions
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translate to certain responsibilities for you if you distribute copies of
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the software, or if you modify it.
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For example, if you distribute copies of such a program, whether gratis or
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for a fee, you must give the recipients all the rights that you have. You
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must make sure that they, too, receive or can get the source code. And you
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must show them these terms so they know their rights.
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We protect your rights with two steps: (1) copyright the software, and (2)
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offer you this license which gives you legal permission to copy, distribute
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and/or modify the software.
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Also, for each author's protection and ours, we want to make certain that
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everyone understands that there is no warranty for this free software. If
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the software is modified by someone else and passed on, we want its recipients
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to know that what they have is not the original, so that any problems introduced
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by others will not reflect on the original authors' reputations.
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Finally, any free program is threatened constantly by software patents. We
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wish to avoid the danger that redistributors of a free program will individually
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obtain patent licenses, in effect making the program proprietary. To prevent
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this, we have made it clear that any patent must be licensed for everyone's
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free use or not licensed at all.
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The precise terms and conditions for copying, distribution and modification
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follow.
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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0. This License applies to any program or other work which contains a notice
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placed by the copyright holder saying it may be distributed under the terms
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of this General Public License. The "Program", below, refers to any such program
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or work, and a "work based on the Program" means either the Program or any
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derivative work under copyright law: that is to say, a work containing the
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Program or a portion of it, either verbatim or with modifications and/or translated
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into another language. (Hereinafter, translation is included without limitation
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in the term "modification".) Each licensee is addressed as "you".
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Activities other than copying, distribution and modification are not covered
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by this License; they are outside its scope. The act of running the Program
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is not restricted, and the output from the Program is covered only if its
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contents constitute a work based on the Program (independent of having been
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made by running the Program). Whether that is true depends on what the Program
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does.
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1. You may copy and distribute verbatim copies of the Program's source code
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as you receive it, in any medium, provided that you conspicuously and appropriately
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publish on each copy an appropriate copyright notice and disclaimer of warranty;
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keep intact all the notices that refer to this License and to the absence
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of any warranty; and give any other recipients of the Program a copy of this
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License along with the Program.
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You may charge a fee for the physical act of transferring a copy, and you
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may at your option offer warranty protection in exchange for a fee.
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2. You may modify your copy or copies of the Program or any portion of it,
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thus forming a work based on the Program, and copy and distribute such modifications
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or work under the terms of Section 1 above, provided that you also meet all
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of these conditions:
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a) You must cause the modified files to carry prominent notices stating that
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you changed the files and the date of any change.
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b) You must cause any work that you distribute or publish, that in whole or
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in part contains or is derived from the Program or any part thereof, to be
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licensed as a whole at no charge to all third parties under the terms of this
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License.
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c) If the modified program normally reads commands interactively when run,
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you must cause it, when started running for such interactive use in the most
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ordinary way, to print or display an announcement including an appropriate
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copyright notice and a notice that there is no warranty (or else, saying that
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you provide a warranty) and that users may redistribute the program under
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these conditions, and telling the user how to view a copy of this License.
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(Exception: if the Program itself is interactive but does not normally print
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such an announcement, your work based on the Program is not required to print
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an announcement.)
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These requirements apply to the modified work as a whole. If identifiable
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sections of that work are not derived from the Program, and can be reasonably
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considered independent and separate works in themselves, then this License,
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and its terms, do not apply to those sections when you distribute them as
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separate works. But when you distribute the same sections as part of a whole
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which is a work based on the Program, the distribution of the whole must be
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on the terms of this License, whose permissions for other licensees extend
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to the entire whole, and thus to each and every part regardless of who wrote
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it.
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Thus, it is not the intent of this section to claim rights or contest your
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rights to work written entirely by you; rather, the intent is to exercise
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the right to control the distribution of derivative or collective works based
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on the Program.
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In addition, mere aggregation of another work not based on the Program with
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the Program (or with a work based on the Program) on a volume of a storage
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or distribution medium does not bring the other work under the scope of this
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License.
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3. You may copy and distribute the Program (or a work based on it, under Section
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2) in object code or executable form under the terms of Sections 1 and 2 above
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provided that you also do one of the following:
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a) Accompany it with the complete corresponding machine-readable source code,
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which must be distributed under the terms of Sections 1 and 2 above on a medium
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customarily used for software interchange; or,
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b) Accompany it with a written offer, valid for at least three years, to give
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any third party, for a charge no more than your cost of physically performing
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source distribution, a complete machine-readable copy of the corresponding
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source code, to be distributed under the terms of Sections 1 and 2 above on
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a medium customarily used for software interchange; or,
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c) Accompany it with the information you received as to the offer to distribute
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corresponding source code. (This alternative is allowed only for noncommercial
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distribution and only if you received the program in object code or executable
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form with such an offer, in accord with Subsection b above.)
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The source code for a work means the preferred form of the work for making
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modifications to it. For an executable work, complete source code means all
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the source code for all modules it contains, plus any associated interface
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definition files, plus the scripts used to control compilation and installation
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of the executable. However, as a special exception, the source code distributed
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need not include anything that is normally distributed (in either source or
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binary form) with the major components (compiler, kernel, and so on) of the
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operating system on which the executable runs, unless that component itself
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accompanies the executable.
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If distribution of executable or object code is made by offering access to
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copy from a designated place, then offering equivalent access to copy the
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source code from the same place counts as distribution of the source code,
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even though third parties are not compelled to copy the source along with
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the object code.
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4. You may not copy, modify, sublicense, or distribute the Program except
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as expressly provided under this License. Any attempt otherwise to copy, modify,
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sublicense or distribute the Program is void, and will automatically terminate
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your rights under this License. However, parties who have received copies,
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or rights, from you under this License will not have their licenses terminated
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so long as such parties remain in full compliance.
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5. You are not required to accept this License, since you have not signed
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it. However, nothing else grants you permission to modify or distribute the
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Program or its derivative works. These actions are prohibited by law if you
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do not accept this License. Therefore, by modifying or distributing the Program
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(or any work based on the Program), you indicate your acceptance of this License
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to do so, and all its terms and conditions for copying, distributing or modifying
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the Program or works based on it.
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6. Each time you redistribute the Program (or any work based on the Program),
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the recipient automatically receives a license from the original licensor
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to copy, distribute or modify the Program subject to these terms and conditions.
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You may not impose any further restrictions on the recipients' exercise of
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the rights granted herein. You are not responsible for enforcing compliance
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by third parties to this License.
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7. If, as a consequence of a court judgment or allegation of patent infringement
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or for any other reason (not limited to patent issues), conditions are imposed
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on you (whether by court order, agreement or otherwise) that contradict the
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conditions of this License, they do not excuse you from the conditions of
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this License. If you cannot distribute so as to satisfy simultaneously your
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obligations under this License and any other pertinent obligations, then as
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a consequence you may not distribute the Program at all. For example, if a
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patent license would not permit royalty-free redistribution of the Program
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by all those who receive copies directly or indirectly through you, then the
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only way you could satisfy both it and this License would be to refrain entirely
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from distribution of the Program.
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If any portion of this section is held invalid or unenforceable under any
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particular circumstance, the balance of the section is intended to apply and
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the section as a whole is intended to apply in other circumstances.
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It is not the purpose of this section to induce you to infringe any patents
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or other property right claims or to contest validity of any such claims;
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this section has the sole purpose of protecting the integrity of the free
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software distribution system, which is implemented by public license practices.
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Many people have made generous contributions to the wide range of software
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distributed through that system in reliance on consistent application of that
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system; it is up to the author/donor to decide if he or she is willing to
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distribute software through any other system and a licensee cannot impose
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that choice.
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This section is intended to make thoroughly clear what is believed to be a
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consequence of the rest of this License.
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8. If the distribution and/or use of the Program is restricted in certain
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countries either by patents or by copyrighted interfaces, the original copyright
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holder who places the Program under this License may add an explicit geographical
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distribution limitation excluding those countries, so that distribution is
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permitted only in or among countries not thus excluded. In such case, this
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License incorporates the limitation as if written in the body of this License.
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9. The Free Software Foundation may publish revised and/or new versions of
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the General Public License from time to time. Such new versions will be similar
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in spirit to the present version, but may differ in detail to address new
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problems or concerns.
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Each version is given a distinguishing version number. If the Program specifies
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a version number of this License which applies to it and "any later version",
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you have the option of following the terms and conditions either of that version
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or of any later version published by the Free Software Foundation. If the
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Program does not specify a version number of this License, you may choose
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any version ever published by the Free Software Foundation.
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10. If you wish to incorporate parts of the Program into other free programs
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whose distribution conditions are different, write to the author to ask for
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permission. For software which is copyrighted by the Free Software Foundation,
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write to the Free Software Foundation; we sometimes make exceptions for this.
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Our decision will be guided by the two goals of preserving the free status
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of all derivatives of our free software and of promoting the sharing and reuse
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of software generally.
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NO WARRANTY
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11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
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THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
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STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM
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"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
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OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
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THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE
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THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
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OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
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OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES
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OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
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HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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END OF TERMS AND CONDITIONS
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How to Apply These Terms to Your New Programs
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If you develop a new program, and you want it to be of the greatest possible
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use to the public, the best way to achieve this is to make it free software
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which everyone can redistribute and change under these terms.
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To do so, attach the following notices to the program. It is safest to attach
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them to the start of each source file to most effectively convey the exclusion
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of warranty; and each file should have at least the "copyright" line and a
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pointer to where the full notice is found.
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<one line to give the program's name and an idea of what it does.>
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Copyright (C)< yyyy> <name of author>
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
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Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Also add information on how to contact you by electronic and paper mail.
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If the program is interactive, make it output a short notice like this when
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it starts in an interactive mode:
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Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
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with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software,
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and you are welcome to redistribute it under certain conditions; type `show
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c' for details.
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The hypothetical commands `show w' and `show c' should show the appropriate
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parts of the General Public License. Of course, the commands you use may be
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called something other than `show w' and `show c'; they could even be mouse-clicks
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or menu items--whatever suits your program.
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You should also get your employer (if you work as a programmer) or your school,
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if any, to sign a "copyright disclaimer" for the program, if necessary. Here
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is a sample; alter the names:
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision'
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(which makes passes at compilers) written by James Hacker.
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<signature of Ty Coon >, 1 April 1989 Ty Coon, President of Vice This General
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Public License does not permit incorporating your program into proprietary
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programs. If your program is a subroutine library, you may consider it more
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useful to permit linking proprietary applications with the library. If this
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is what you want to do, use the GNU Lesser General Public License instead
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of this License.
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# GNU通用公共许可证
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1991年6月
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第2版,版权所有(C)1989,1991 Free Software Foundation,Inc.
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51 Franklin Street,Fifth Floor,Boston,MA 02110-1301,USA
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每个人都可以复制和分发本许可证文档的逐字副本,但不允许更改。
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序言大多数软件的许可旨在剥夺您共享和更改软件的自由。相比之下,GNU通用公共许可证旨在确保您自由共享和更改免费软件-确保该软件对其所有用户免费。
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本通用公共许可证适用于大多数自由软件基金会的软件以及其作者承诺使用该软件的任何其他程序。 (某些其他Free Software Foundation软件由GNU通
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用公共通用许可证授权。)您也可以将其应用到程序中。当我们谈论自由软件时,我们指的是自由,而不是价格。我们的通用公共许可证旨在确保您可以自由分
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发免费软件的副本(如果需要,可以为此服务付费),可以接收源代码,也可以在需要时获得源代码,从而可以更改软件或在新的免费程序中使用它的片段;并
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且您知道您可以做这些事情。为了保护您的权利,我们需要做出限制,禁止任何人否认您这些权利或要求您放弃这些权利。如果您分发软件副本或对其进行修改,
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这些限制将对您承担某些责任。例如,如果您分发此类程序的副本(无论是免费还是收费),则必须授予接收者所有的权利。您必须确保它们也可以接收或可以获
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取源代码。并且您必须向他们显示这些术语,以便他们了解其权利。我们通过两个步骤保护您的权利:(1)对软件进行版权保护,以及(2)向您提供此许可,
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该许可授予您复制,分发和分发软件的合法许可 |