source: trunk/essentials/dev-lang/perl/Copying@ 3314

Last change on this file since 3314 was 3181, checked in by bird, 19 years ago

perl 5.8.8

File size: 12.2 KB
Line 
1 GNU GENERAL PUBLIC LICENSE
2 Version 1, February 1989
3
4 Copyright (C) 1989 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 Preamble
10
11 The license agreements of most software companies try to keep users
12at the mercy of those companies. By contrast, our General Public
13License is intended to guarantee your freedom to share and change free
14software--to make sure the software is free for all its users. The
15General Public License applies to the Free Software Foundation's
16software and to any other program whose authors commit to using it.
17You can use it for your programs, too.
18
19 When we speak of free software, we are referring to freedom, not
20price. Specifically, the General Public License is designed to make
21sure that you have the freedom to give away or sell copies of free
22software, that you receive source code or can get it if you want it,
23that you can change the software or use pieces of it in new free
24programs; and that you know you can do these things.
25
26 To protect your rights, we need to make restrictions that forbid
27anyone to deny you these rights or to ask you to surrender the rights.
28These restrictions translate to certain responsibilities for you if you
29distribute copies of the software, or if you modify it.
30
31 For example, if you distribute copies of a such a program, whether
32gratis or for a fee, you must give the recipients all the rights that
33you have. You must make sure that they, too, receive or can get the
34source code. And you must tell them their rights.
35
36 We protect your rights with two steps: (1) copyright the software, and
37(2) offer you this license which gives you legal permission to copy,
38distribute and/or modify the software.
39
40 Also, for each author's protection and ours, we want to make certain
41that everyone understands that there is no warranty for this free
42software. If the software is modified by someone else and passed on, we
43want its recipients to know that what they have is not the original, so
44that any problems introduced by others will not reflect on the original
45authors' reputations.
46
47 The precise terms and conditions for copying, distribution and
48modification follow.
49
50
51 GNU GENERAL PUBLIC LICENSE
52 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
53
54 0. This License Agreement applies to any program or other work which
55contains a notice placed by the copyright holder saying it may be
56distributed under the terms of this General Public License. The
57"Program", below, refers to any such program or work, and a "work based
58on the Program" means either the Program or any work containing the
59Program or a portion of it, either verbatim or with modifications. Each
60licensee is addressed as "you".
61
62 1. You may copy and distribute verbatim copies of the Program's source
63code as you receive it, in any medium, provided that you conspicuously and
64appropriately publish on each copy an appropriate copyright notice and
65disclaimer of warranty; keep intact all the notices that refer to this
66General Public License and to the absence of any warranty; and give any
67other recipients of the Program a copy of this General Public License
68along with the Program. You may charge a fee for the physical act of
69transferring a copy.
70
71 2. You may modify your copy or copies of the Program or any portion of
72it, and copy and distribute such modifications under the terms of Paragraph
731 above, provided that you also do the following:
74
75 a) cause the modified files to carry prominent notices stating that