Free and open source software (FOSS) refers to software with source code that is made available under an open source license, allowing users to study, change, and distribute the software for any purpose. Key figures in FOSS include Richard Stallman, who founded the Free Software Foundation and started the GNU project, and Linux Torvalds, who wrote the widely used Linux kernel. FOSS provides users with freedom around using, modifying, and sharing software. Popular Linux distributions include Ubuntu, Linux Mint, Fedora, Arch Linux, and Slack Linux.

3. FREE AND OPEN SOURCE
SOFTWARE

4. It is a computer software with its source code made
available with a license in which the copy right holder
provides the right to study ,change and distribute the
software to anyone for any purpose.
It means software that respect users freedom and
community.
It means the users have the freedom to run, copy,
distribute, study , change, and improve software

5. FOUNDERS OF FREE SOFTWARE
 Richard Stallman founded
the free software foundation
& the GNU project
 Linux Torvalds wrote the
Linux kernel which is used in
the vast majority of FOSS
machine

6. FEATURES OF FREE SOFTWARE
 The freedom to run the program as you wish, for any
purpose.
 The freedom to study how the program works, and change
it, so it does your computing as you wish.
 The freedom to redistribute copies as you can help your
neighbor.
 The freedom to redistribute copies of you modified
versions to others. By doing this you can give the whole
community a chance to benefit from you changes.

7. GNU/LINUX
 GNU is a recursive acronym for “ GNU is Not
Unix “. GNU’s design is a Unix- like , but
differs from Unix by being free software and
containing no Unix code and was the original
focus of the Free Software Foundation (FSF).
 Linux kernel can also be used with GNU
software. The combination of GNU software
and the Linux kernel is commonly known as
LINUX (GNU/LINUX).

8. FEATURES OF LINUX
Users have immense freedom of choice in their
software .
e.g. : Linux users can choose from a dozen different
command line shells and several graphical desktop.
Less likely to crash , better able to run more than one
program at the same time , and more secure than
many operating systems.

9. Popular Linux operating systems
are :
• Ubuntu
• Linux Mint
• Fedora
• Arch Linux
• Slack Linux
• Puppy Linux

10. UBUNTU
 It is a Linux operating system.
‘UBUNTU’ is an ancient African word meaning
‘humanity to others’ . It also means ‘Iam what iam
because of who well all are’ .
The vision for Ubuntu is part social and part
economic, free software available to everybody on the
same terms, and funded through a portfolio of services
provided by canonical.

11. THANK YOU