GPL 许可协议

GNU General Public License (GPL) 是一个自由软件许可证，由自由软件基金会（Free Software Foundation, FSF）制定。以下是关于 GPL 许可协议的简要介绍。

许可协议要点

自由软件：用户可以自由地运行、复制、分发、研究、修改和改进软件。
版权保留：软件的作者保留版权，但用户在遵守许可协议的前提下，有权使用软件。
源代码：用户必须能够获取软件的源代码，以便理解、修改和重新分发。

许可协议内容

## 许可协议全文

以下是 GPL 许可协议的全文：

GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 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.

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 and the program relating to
the software, and that you can release modified versions.

A secondary benefit of protecting freedom is that software
distributors can modify their software to suit customers' needs, without
costing the users anything. We sometimes make exceptions to this when
it is essential to improve the user's experience; these exceptions are
described in section 7.

You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

GPL 许可协议

许可协议要点

许可协议内容

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