1 GNU GENERAL PUBLIC LICENSE 2 Version 2, June 1991 3 4 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 5 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA 6 Everyone is permitted to copy and distribute verbatim copies 7 of this license document, but changing it is not allowed. 8 9 The Free Software Foundation has exempted Bash from the requirement of 10 Paragraph 2c of the General Public License. This is to say, there is 11 no requirement for Bash to print a notice when it is started 12 interactively in the usual way. We made this exception because users 13 and standards expect shells not to print such messages. This 14 exception applies to any program that serves as a shell and that is 15 based primarily on Bash as opposed to other GNU software. 16 17 Preamble 18 19 The licenses for most software are designed to take away your 20 freedom to share and change it. By contrast, the GNU General Public 21 License is intended to guarantee your freedom to share and change free 22 software--to make sure the software is free for all its users. This 23 General Public License applies to most of the Free Software 24 Foundation's software and to any other program whose authors commit to 25 using it. (Some other Free Software Foundation software is covered by 26 the GNU Library General Public License instead.) You can apply it to 27 your programs, too. 28 29 When we speak of free software, we are referring to freedom, not 30 price. Our General Public Licenses are designed to make sure that you 31 have the freedom to distribute copies of free software (and charge for 32 this service if you wish), that you receive source code or can get it 33 if you want it, that you can change the software or use pieces of it 34 in new free programs; and that you know you can do these things. 35 36 To protect your rights, we need to make restrictions that forbid 37 anyone to deny you these rights or to ask you to surrender the rights. 38 These restrictions translate to certain responsibilities for you if you 39 distribute copies of the software, or if you modify it. 40 41 For example, if you distribute copies of such a program, whether 42 gratis or for a fee, you must give the recipients all the rights that 43 you have. You must make sure that they, too, receive or can get the 44 source code. And you must show them these terms so they know their 45 rights. 46 47 We protect your rights with two steps: (1) copyright the software, and 48 (2) offer you this license which gives you legal permission to copy, 49 distribute and/or modify the software. 50 51 Also, for each author's protection and ours, we want to make certain 52 that everyone understands that there is no warranty for this free 53 software. If the software is modified by someone else and passed on, we 54 want its recipients to know that what they have is not the original, so 55 that any problems introduced by others will not reflect on the original 56 authors' reputations. 57 58 Finally, any free program is threatened constantly by software 59 patents. We wish to avoid the danger that redistributors of a free 60 program will individually obtain patent licenses, in effect making the 61 program proprietary. To prevent this, we have made it clear that any 62 patent must be licensed for everyone's free use or not licensed at all. 63 64 The precise terms and conditions for copying, distribution and 65 modification follow. 66 67 GNU GENERAL PUBLIC LICENSE 68 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 69 70 0. This License applies to any program or other work which contains 71 a notice placed by the copyright holder saying it may be distributed 72 under the terms of this General Public License. The "Program", below, 73 refers to any such program or work, and a "work based on the Program" 74 means either the Program or any derivative work under copyright law: 75 that is to say, a work containing the Program or a portion of it, 76 either verbatim or with modifications and/or translated into another 77 language. (Hereinafter, translation is included without limitation in 78 the term "modification".) Each licensee is addressed as "you". 79 80 Activities other than copying, distribution and modification are not 81 covered by this License; they are outside its scope. The act of 82 running the Program is not restricted, and the output from the Program 83 is covered only if its contents constitute a work based on the 84 Program (independent of having been made by running the Program). 85 Whether that is true depends on what the Program does. 86 87 1. You may copy and distribute verbatim copies of the Program's 88 source code as you receive it, in any medium, provided that you 89 conspicuously and appropriately publish on each copy an appropriate 90 copyright notice and disclaimer of warranty; keep intact all the 91 notices that refer to this License and to the absence of any warranty; 92 and give any other recipients of the Program a copy of this License 93 along with the Program. 94 95 You may charge a fee for the physical act of transferring a copy, and 96 you may at your option offer warranty protection in exchange for a fee. 97 98 2. You may modify your copy or copies of the Program or any portion 99 of it, thus forming a work based on the Program, and copy and 100 distribute such modifications or work under the terms of Section 1 101 above, provided that you also meet all of these conditions: 102 103 a) You must cause the modified files to carry prominent notices 104 stating that you changed the files and the date of any change. 105 106 b) You must cause any work that you distribute or publish, that in 107 whole or in part contains or is derived from the Program or any 108 part thereof, to be licensed as a whole at no charge to all third 109 parties under the terms of this License. 110 111 c) If the modified program normally reads commands interactively 112 when run, you must cause it, when started running for such 113 interactive use in the most ordinary way, to print or display an 114 announcement including an appropriate copyright notice and a 115 notice that there is no warranty (or else, saying that you provide 116 a warranty) and that users may redistribute the program under 117 these conditions, and telling the user how to view a copy of this 118 License. (Exception: if the Program itself is interactive but 119 does not normally print such an announcement, your work based on 120 the Program is not required to print an announcement.) 121 122 These requirements apply to the modified work as a whole. If 123 identifiable sections of that work are not derived from the Program, 124 and can be reasonably considered independent and separate works in 125 themselves, then this License, and its terms, do not apply to those 126 sections when you distribute them as separate works. But when you 127 distribute the same sections as part of a whole which is a work based 128 on the Program, the distribution of the whole must be on the terms of 129 this License, whose permissions for other licensees extend to the 130 entire whole, and thus to each and every part regardless of who wrote it. 131 132 Thus, it is not the intent of this section to claim rights or contest 133 your rights to work written entirely by you; rather, the intent is to 134 exercise the right to control the distribution of derivative or 135 collective works based on the Program. 136 137 In addition, mere aggregation of another work not based on the Program 138 with the Program (or with a work based on the Program) on a volume of 139 a storage or distribution medium does not bring the other work under 140 the scope of this License. 141 142 3. You may copy and distribute the Program (or a work based on it, 143 under Section 2) in object code or executable form under the terms of 144 Sections 1 and 2 above provided that you also do one of the following: 145 146 a) Accompany it with the complete corresponding machine-readable 147 source code, which must be distributed under the terms of Sections 148 1 and 2 above on a medium customarily used for software interchange; or, 149 150 b) Accompany it with a written offer, valid for at least three 151 years, to give any third party, for a charge no more than your 152 cost of physically performing source distribution, a complete 153 machine-readable copy of the corresponding source code, to be 154 distributed under the terms of Sections 1 and 2 above on a medium 155 customarily used for software interchange; or, 156 157 c) Accompany it with the information you received as to the offer 158 to distribute corresponding source code. (This alternative is 159 allowed only for noncommercial distribution and only if you 160 received the program in object code or executable form with such 161 an offer, in accord with Subsection b above.) 162 163 The source code for a work means the preferred form of the work for 164 making modifications to it. For an executable work, complete source 165 code means all the source code for all modules it contains, plus any 166 associated interface definition files, plus the scripts used to 167 control compilation and installation of the executable. However, as a 168 special exception, the source code distributed need not include 169 anything that is normally distributed (in either source or binary 170 form) with the major components (compiler, kernel, and so on) of the 171 operating system on which the executable runs, unless that component 172 itself accompanies the executable. 173 174 If distribution of executable or object code is made by offering 175 access to copy from a designated place, then offering equivalent 176 access to copy the source code from the same place counts as 177 distribution of the source code, even though third parties are not 178 compelled to copy the source along with the object code. 179 180 4. You may not copy, modify, sublicense, or distribute the Program 181 except as expressly provided under this License. Any attempt 182 otherwise to copy, modify, sublicense or distribute the Program is 183 void, and will automatically terminate your rights under this License. 184 However, parties who have received copies, or rights, from you under 185 this License will not have their licenses terminated so long as such 186 parties remain in full compliance. 187 188 5. You are not required to accept this License, since you have not 189 signed it. However, nothing else grants you permission to modify or 190 distribute the Program or its derivative works. These actions are 191 prohibited by law if you do not accept this License. Therefore, by 192 modifying or distributing the Program (or any work based on the 193 Program), you indicate your acceptance of this License to do so, and 194 all its terms and conditions for copying, distributing or modifying 195 the Program or works based on it. 196 197 6. Each time you redistribute the Program (or any work based on the 198 Program), the recipient automatically receives a license from the 199 original licensor to copy, distribute or modify the Program subject to 200 these terms and conditions. You may not impose any further 201 restrictions on the recipients' exercise of the rights granted herein. 202 You are not responsible for enforcing compliance by third parties to 203 this License. 204 205 7. If, as a consequence of a court judgment or allegation of patent 206 infringement or for any other reason (not limited to patent issues), 207 conditions are imposed on you (whether by court order, agreement or 208 otherwise) that contradict the conditions of this License, they do not 209 excuse you from the conditions of this License. If you cannot 210 distribute so as to satisfy simultaneously your obligations under this 211 License and any other pertinent obligations, then as a consequence you 212 may not distribute the Program at all. For example, if a patent 213 license would not permit royalty-free redistribution of the Program by 214 all those who receive copies directly or indirectly through you, then 215 the only way you could satisfy both it and this License would be to 216 refrain entirely from distribution of the Program. 217 218 If any portion of this section is held invalid or unenforceable under 219 any particular circumstance, the balance of the section is intended to 220 apply and the section as a whole is intended to apply in other 221 circumstances. 222 223 It is not the purpose of this section to induce you to infringe any 224 patents or other property right claims or to contest validity of any 225 such claims; this section has the sole purpose of protecting the 226 integrity of the free software distribution system, which is 227 implemented by public license practices. Many people have made 228 generous contributions to the wide range of software distributed 229 through that system in reliance on consistent application of that 230 system; it is up to the author/donor to decide if he or she is willing 231 to distribute software through any other system and a licensee cannot 232 impose that choice. 233 234 This section is intended to make thoroughly clear what is believed to 235 be a consequence of the rest of this License. 236 237 8. If the distribution and/or use of the Program is restricted in 238 certain countries either by patents or by copyrighted interfaces, the 239 original copyright holder who places the Program under this License 240 may add an explicit geographical distribution limitation excluding 241 those countries, so that distribution is permitted only in or among 242 countries not thus excluded. In such case, this License incorporates 243 the limitation as if written in the body of this License. 244 245 9. The Free Software Foundation may publish revised and/or new versions 246 of the General Public License from time to time. Such new versions will 247 be similar in spirit to the present version, but may differ in detail to 248 address new problems or concerns. 249 250 Each version is given a distinguishing version number. If the Program 251 specifies a version number of this License which applies to it and "any 252 later version", you have the option of following the terms and conditions 253 either of that version or of any later version published by the Free 254 Software Foundation. If the Program does not specify a version number of 255 this License, you may choose any version ever published by the Free Software 256 Foundation. 257 258 10. If you wish to incorporate parts of the Program into other free 259 programs whose distribution conditions are different, write to the author 260 to ask for permission. For software which is copyrighted by the Free 261 Software Foundation, write to the Free Software Foundation; we sometimes 262 make exceptions for this. Our decision will be guided by the two goals 263 of preserving the free status of all derivatives of our free software and 264 of promoting the sharing and reuse of software generally. 265 266 NO WARRANTY 267 268 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 269 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 270 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 271 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 272 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 273 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 274 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 275 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 276 REPAIR OR CORRECTION. 277 278 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 279 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 280 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 281 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 282 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 283 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 284 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 285 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 286 POSSIBILITY OF SUCH DAMAGES. 287 288 END OF TERMS AND CONDITIONS 289 290 Appendix: How to Apply These Terms to Your New Programs 291 292 If you develop a new program, and you want it to be of the greatest 293 possible use to the public, the best way to achieve this is to make it 294 free software which everyone can redistribute and change under these terms. 295 296 To do so, attach the following notices to the program. It is safest 297 to attach them to the start of each source file to most effectively 298 convey the exclusion of warranty; and each file should have at least 299 the "copyright" line and a pointer to where the full notice is found. 300 301 <one line to give the program's name and a brief idea of what it does.> 302 Copyright (C) 19yy <name of author> 303 304 This program is free software; you can redistribute it and/or modify 305 it under the terms of the GNU General Public License as published by 306 the Free Software Foundation; either version 2 of the License, or 307 (at your option) any later version. 308 309 This program is distributed in the hope that it will be useful, 310 but WITHOUT ANY WARRANTY; without even the implied warranty of 311 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 312 GNU General Public License for more details. 313 314 You should have received a copy of the GNU General Public License 315 along with this program; if not, write to the Free Software 316 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 317 318 Also add information on how to contact you by electronic and paper mail. 319 320 If the program is interactive, make it output a short notice like this 321 when it starts in an interactive mode: 322 323 Gnomovision version 69, Copyright (C) 19yy name of author 324 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 325 This is free software, and you are welcome to redistribute it 326 under certain conditions; type `show c' for details. 327 328 The hypothetical commands `show w' and `show c' should show the appropriate 329 parts of the General Public License. Of course, the commands you use may 330 be called something other than `show w' and `show c'; they could even be 331 mouse-clicks or menu items--whatever suits your program. 332 333 You should also get your employer (if you work as a programmer) or your 334 school, if any, to sign a "copyright disclaimer" for the program, if 335 necessary. Here is a sample; alter the names: 336 337 Yoyodyne, Inc., hereby disclaims all copyright interest in the program 338 `Gnomovision' (which makes passes at compilers) written by James Hacker. 339 340 <signature of Ty Coon>, 1 April 1989 341 Ty Coon, President of Vice 342 343 This General Public License does not permit incorporating your program into 344 proprietary programs. If your program is a subroutine library, you may 345 consider it more useful to permit linking proprietary applications with the 346 library. If this is what you want to do, use the GNU Library General 347 Public License instead of this License. 348
