1.GNU
Leather bondage plan 1983.9.27
Create a completely free operating system
By a series of applications, system libraries and software development tools consisting of a collection
GNU is typically used liux kernel, this combination is called GNU / Linux operating system
www.gnu.org
2.GPL
GNU General Public License informal Chinese translation
Is the most famous open-source license
3.FSF
Free Software Foundation
The main project is the GNU
4. What is the Free Software
"Free software" is a matter of rights, not price
Four freedoms:
For any purpose, the freedom to run the software
To study how the program works, and adapt it to the free software
We have the freedom to re-release copies
To improve the program and release improvements to the public free