The document is an introduction to Linux presented by Vikash Agrawal. It discusses Linux's open source philosophy, history originating from Unix, advantages like low cost and flexibility, and widespread uses including by hackers, supercomputers, Google, Wikipedia and the New York Stock Exchange. It also covers major Linux distributions like OpenSUSE, Red Hat, Debian, Knoppix, Fedora and Slackware.

1. An Introduction To Linux
Vikash Agrawal
+91-9379191136
vikashagrawal1990@gmail.com
Linux Users Group, Manipal
October 16, 2010

2. Index
1 Linux Philosophy
2 Open Source
3 Free Softwares
4 History
5 Open Source Software Model
6 Flavours
7 Linux Advantages
8 Who Uses Linux
9 Major Distributions
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3. Linux Philosophy
Linux is Free and Open Source
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4. Linux Philosophy
Linux is Free and Open Source
The term Free is in the sense, Freedom of source
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5. Linux Philosophy
Linux is Free and Open Source
The term Free is in the sense, Freedom of source
Since Linux is free and Open Source, there are many flavors to linux
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6. Open Source - Definition
Owners of Proprietary Softwares closely guard their Source code, and
thus cannot be modified by anyone except them
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7. Open Source - Definition
Owners of Proprietary Softwares closely guard their Source code, and
thus cannot be modified by anyone except them
On the contrary Open Source softwares means, the source code of the
software is OPEN to general public
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8. Open Source - Definition
Owners of Proprietary Softwares closely guard their Source code, and
thus cannot be modified by anyone except them
On the contrary Open Source softwares means, the source code of the
software is OPEN to general public
Source Code is made open so that people too can contribute to the
development of software
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9. Free Softwares
Free does not mean Free of Cost, instead it means the freedom of
source code
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10. Free Softwares
Free does not mean Free of Cost, instead it means the freedom of
source code
Though Open Source are mostly free of cost but with few Exceptions
(for more info on this you can visit - http://en.wikipedia.org/
wiki/List_of_proprietary_software_for_Linux)
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11. Free Softwares
Free does not mean Free of Cost, instead it means the freedom of
source code
Though Open Source are mostly free of cost but with few Exceptions
(for more info on this you can visit - http://en.wikipedia.org/
wiki/List_of_proprietary_software_for_Linux)
In Open Source Software you have the right to use Use, Modify,
Copy and Distribute the software with or without the changes
that you made to the code
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12. History
In 1970’s AT&t Bell labs funded
a project to create a new
Operating System and came up
with UNIX
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13. History
In 1970’s AT&t Bell labs funded
a project to create a new
Operating System and came up
with UNIX
UNIX finally developed as a
powerfull Operating System and
quickly became very famous
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14. History
In 1970’s AT&t Bell labs funded
a project to create a new
Operating System and came up
with UNIX
UNIX finally developed as a
powerfull Operating System and
quickly became very famous
Soon after contribution from
various Universities AT&T
licensed it and made it
proprietary making it unfit for
teaching and learning
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15. History
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16. History
Linux is Unix-like Operating
System
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17. History
Linux is Unix-like Operating
System
The code of UNIX is not copied,
only the Operating System
Concepts are properly
incorporated
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18. History
Linux is Unix-like Operating
System
The code of UNIX is not copied,
only the Operating System
Concepts are properly
incorporated
The development of Linux
started from scratch and thus is
just a Unix clone and not freely
available UNIX copy
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19. Free/Open Softwares good model
Closed softwares Like Windows
owners consider that less
people should the source
code,less is the chance of
getting their products hacked
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20. Free/Open Softwares good model
Closed softwares Like Windows
owners consider that less
people should the source
code,less is the chance of
getting their products hacked
Sharply opposite, Open Source
developers consider that more
people should know the source
code, more bugs will be found
and more people will contribute
back fixing those bugs
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21. Free/Open Softwares good model
Closed softwares Like Windows
owners consider that less
people should the source
code,less is the chance of
getting their products hacked
Sharply opposite, Open Source
developers consider that more
people should know the source
code, more bugs will be found
and more people will contribute
back fixing those bugs
A great example for this is
Ubuntu.
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22. Why so many Linux Flavours ???
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23. Why so many Linux Flavours ???
All Linux flavours are called
Distros which are a fancy
term for distributions
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24. Why so many Linux Flavours ???
All Linux flavours are called
Distros which are a fancy
term for distributions
Since its Free and Open Source
people are free to modify and
release their own version and
copies
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25. Why so many Linux Flavours ???
All Linux flavours are called
Distros which are a fancy
term for distributions
Since its Free and Open Source
people are free to modify and
release their own version and
copies
If you dont like you one distro
you can freely move to any other
one which you like for e.g- Open
Suse, Mandriva, Slackware etc
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26. Advantages Of Linux
Low Cost
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27. Advantages Of Linux
Low Cost
Stablity
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28. Advantages Of Linux
Low Cost
Stablity
Performance
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29. Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
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30. Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
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31. Advantages Of Linux
Low Cost Compatiblity
Stablity
Performance
Network Friendliness
Flexiblity
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32. Advantages Of Linux
Low Cost Compatiblity
Stablity Fast and Easy Installation
Performance
Network Friendliness
Flexiblity
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33. Advantages Of Linux
Low Cost Compatiblity
Stablity Fast and Easy Installation
Performance Full use of Hard Disk
Network Friendliness
Flexiblity
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34. Advantages Of Linux
Low Cost Compatiblity
Stablity Fast and Easy Installation
Performance Full use of Hard Disk
Network Friendliness Multitasking
Flexiblity
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35. Advantages Of Linux
Low Cost Compatiblity
Stablity Fast and Easy Installation
Performance Full use of Hard Disk
Network Friendliness Multitasking
Flexiblity Security
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36. Who Uses Linux???
Almost all Hackers rely on linux
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37. Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
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38. Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux and
saved 17 million Dollars
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39. Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux and
saved 17 million Dollars
Google, the most popular search engine on the web, runs on a cluster
of over 1000 Linux servers
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40. Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux and
saved 17 million Dollars
Google, the most popular search engine on the web, runs on a cluster
of over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntu
since 2008
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41. Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux and
saved 17 million Dollars
Google, the most popular search engine on the web, runs on a cluster
of over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntu
since 2008
NYSE runs on linux
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42. Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux and
saved 17 million Dollars
Google, the most popular search engine on the web, runs on a cluster
of over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntu
since 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visit
http://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
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43. Major Distibutions
Open Suse
Red Hat
Debian
Knoppix
Fedora
Slackware
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44. Thank You!!!
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