FOSS-intro-with-license
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1) Software source codes are protected by copyright, not patents. Copyright is granted automatically when an idea is expressed and lasts over 100 years. It restricts copying, distribution, and creating derivative works without permission. 2) There are various open source software licenses like the GNU GPL, GNU LGPL, and BSD licenses. The GPL requires derived works to also be open source while the LGPL allows linking to closed source software. Permissive licenses like BSD allow commercial use and do not require derived works to be open source. 3) When GPL licensed code is added to a closed source project, the entire combined work must be released under the GPL, becoming open source. Modifying GPL software without releasing the source is a
![Source Code
class HelloWorldApp {
public static void main(String[] args) {
System.out.println("Hello World!");
}
}
http://docs.oracle.com/javase/tutorial/getStarted/application/index.html](https://image.slidesharecdn.com/final-foos-lecense-fs-111219062040-phpapp02/85/FOSS-intro-with-license-9-320.jpg)
![Derivated Work
class HelloOUSL {
public static void main(String[] args) {
System.out.println("Hello OUSL!");
}
}](https://image.slidesharecdn.com/final-foos-lecense-fs-111219062040-phpapp02/85/FOSS-intro-with-license-10-320.jpg)
![Another Work
class FirstApp {
public static void main(String[] args) {
sayHello();
}
private void sayHello() {
System.out.println("Hello OUSL!");
}
}](https://image.slidesharecdn.com/final-foos-lecense-fs-111219062040-phpapp02/85/FOSS-intro-with-license-11-320.jpg)
FOSS-intro-with-license
- 1. Beginners Approach to FOSS though Softawre License
- 2. Hello ! Buddhika Kurera Editor of the FOSS User Magazine Associate - Open Source Initiative
- 3. Accept / Do not Aceept
- 4. © - Copyright Any expression of an idea bares copyright
- 6. Copyrights ● Grant as soon as it expresses ● Last for more than 100 years ● Restrict copying, distributing, creating derivative work, exposing to commercial use ● Author permission is needed !
- 7. Copyrights vs Patent ● Protects the method/ invention ● Should register and follow legal process ● Less lifetime (ex: 20 years) ● Payment required
- 8. Software ● No patents for Software source codes ● Software – Expression of Idea ● Source codes has copyrights instead patents
- 9. Source Code class HelloWorldApp { public static void main(String[] args) { System.out.println("Hello World!"); } } http://docs.oracle.com/javase/tutorial/getStarted/application/index.html
- 10. Derivated Work class HelloOUSL { public static void main(String[] args) { System.out.println("Hello OUSL!"); } }
- 11. Another Work class FirstApp { public static void main(String[] args) { sayHello(); } private void sayHello() { System.out.println("Hello OUSL!"); } }
- 12. Public Domain Copyrights expired ! Author is giving up his copyrights !
- 13. License ● A document which gives permission for something ● Licensor – Party who grants the License ● Licensee – Party who enjoys the Permission ● A Legal agreement/ contract between two parties
- 14. Computer Programs UNIX was appeared in 1969 Programs that work with UNIX are proprietary
- 16. Cost of Software Price of software increased rapidly
- 17. GNU Project ● GNU's Not Unix (GNU) ● Started in 1983 by Richard Stallman ● Developed many software that are FREE !! ● “Software should be FREE !! “
- 18. Free Software ● Free doesnt mean at no-cost, it means FREEDOM to, ● Use Software for any purpose ● Share the software ● Change it as per the need ● Share the modification
- 19. Free and Open Source Software
- 20. GNU GPL ● GNU General Public License ● First release in 1989 ● GPL V3 is the current version ● First Copyleft license, enabling all 4 Freedom rules ● www.gnu.org/licenses/gpl.html
- 21. Copyleft ● Same as copyright, copyleft is another license ● No limits on share, reproduce, adapt or distribute ● Restriction : Change of license is prohibited !
- 22. GNU LGPL ● GNU Lesser General Public License ● First release in 1991 ● LGPL V3 is the current version ● Copyleft license for the software but not for the linked programs/ NOT the derivate work ● www.gnu.org/licenses/lgpl.html
- 23. BSD (Berkeley Software Distribution) ● First permissive license, 1988 ● Grant the freedom to use, share, redistribute and modify ● No limitation on Re-Licensing ● Business Friendly
- 24. Apache ● Released by Apache Software Foundation (ASF) ● Current version Apache 2.0 ● Allows the freedom to use, share, distribute and modify ● No limitations on Re-licensing ● Business Friendly License
- 25. WARRANTY THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ''AS IS'' AND ANY EXPRESS OR IMPLIEDWARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY ANDFITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> ORCONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, ORCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ORSERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ONANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDINGNEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IFADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- 26. Questions and Answers !
- 27. You want to insert a library/ code snippet to your project from a third party !!
- 28. You added GPL licensed code to your software and want to make it closed source?
- 29. Can a software has more than one license?
- 30. How to change a software bearing license X to GPL license?
- 32. What happen if GPL licensed software make closed source with some modifications?
- 34. Contact ME Email bckurera@fossuser.lk Facebook facebook.com/bckurera Other channels! Just google Buddhika Kurera, you will find places I am in.