This is about open source technology and its history and some of its important points. I with it would help you to know more about this technology.

1. Open Source

2. Who am I ?
Yara Elsayed Khalifa
Linux System Administrator
CSED Third year

3. ●What is Open Source (philosophy)?
●Open Source history.
●Open Source examples.
●Why is Open Source so important ?
Topics

4. So What is Open Source ?!

5. What is Open Source ?
Open Source is not just an idea it is a
philosophy.

6. Free vs Freedom
Free to use the production.
Free to discover its source.
Free to edit it.
Free to distribute your edit.
That means you are free to deal with this software

7. License
● GNU General Public License, version 3
● GNU General Public License, version 2
● GNU Lesser General Public License.
● GNU Lesser General Public License,
version 2.1
● GNU Affero General Public License.

8. Open Source Code Examples

9. Open Source History
●
In 1960, Thinking about OS & programming
language compiler started.
●
In 1970, Bell Laps (AT&T now) company
produced UNIX;
the first OS and it was free.

10. ●
In 1980 AT&T company stopped free UNIX
and it became with charge.
●
Then all programs became with charge.
●
Richard Stallman didn't like that
so he decided to make free and open source OS.
Richard Stallman

11. ●
In 1983 Open Source software started and Richard Stallman
succeeded to produce GNU (GNU is Not Unix) project
which was only some applications and GUI not a complete OS.
●
In 25 Aug 1991, Linus Torvalds who was just student in
University of Helsinki sent an email to all people
in the university telling them about (minix: Linux kernel).
Linus Torvalds

12. ●
And by the end of 1991 Linux appeared with GNU org
in the name of GNU/Linux.

14. Why Open Source is important!
1. Security.
“Given enough eyeballs
, all bugs are shadow”
2. Quality.
4. Customizability.
5. Interoperability.
6. Audit-ability.
3.Freedom

15. Disadvantages
There is no administrative institution to
control all produced distributions which is
editing from another open source software.
So there are many open source soft-wares that
doesn't target the normal user.

17. Q&A

18. Thanks
yaraeng6@gmail.com