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An Introduction To Linux
Vikash Agrawal+91-9379191136
Linux Users Group, Manipal
October 16, 2010
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
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 2 / 14
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
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 3 / 14
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
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 3 / 14
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
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 3 / 14
Open Source - Definition
Owners of Proprietary Softwares closely guard their Source code, andthus cannot be modified by anyone except them
On the contrary Open Source softwares means, the source code of thesoftware is OPEN to general public
Source Code is made open so that people too can contribute to thedevelopment of software
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 4 / 14
Open Source - Definition
Owners of Proprietary Softwares closely guard their Source code, andthus cannot be modified by anyone except them
On the contrary Open Source softwares means, the source code of thesoftware is OPEN to general public
Source Code is made open so that people too can contribute to thedevelopment of software
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 4 / 14
Open Source - Definition
Owners of Proprietary Softwares closely guard their Source code, andthus cannot be modified by anyone except them
On the contrary Open Source softwares means, the source code of thesoftware is OPEN to general public
Source Code is made open so that people too can contribute to thedevelopment of software
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 4 / 14
Free Softwares
Free does not mean Free of Cost, instead it means the freedom ofsource 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 changesthat you made to the code
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 5 / 14
Free Softwares
Free does not mean Free of Cost, instead it means the freedom ofsource 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 changesthat you made to the code
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 5 / 14
Free Softwares
Free does not mean Free of Cost, instead it means the freedom ofsource 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 changesthat you made to the code
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 5 / 14
History
In 1970’s AT&t Bell labs fundeda project to create a newOperating System and came upwith UNIX
UNIX finally developed as apowerfull Operating System andquickly became very famous
Soon after contribution fromvarious Universities AT&Tlicensed it and made itproprietary making it unfit forteaching and learning
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 6 / 14
History
In 1970’s AT&t Bell labs fundeda project to create a newOperating System and came upwith UNIX
UNIX finally developed as apowerfull Operating System andquickly became very famous
Soon after contribution fromvarious Universities AT&Tlicensed it and made itproprietary making it unfit forteaching and learning
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 6 / 14
History
In 1970’s AT&t Bell labs fundeda project to create a newOperating System and came upwith UNIX
UNIX finally developed as apowerfull Operating System andquickly became very famous
Soon after contribution fromvarious Universities AT&Tlicensed it and made itproprietary making it unfit forteaching and learning
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 6 / 14
History
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 7 / 14
History
Linux is Unix-like OperatingSystem
The code of UNIX is not copied,only the Operating SystemConcepts are properlyincorporated
The development of Linuxstarted from scratch and thus isjust a Unix clone and not freelyavailable UNIX copy
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 8 / 14
History
Linux is Unix-like OperatingSystem
The code of UNIX is not copied,only the Operating SystemConcepts are properlyincorporated
The development of Linuxstarted from scratch and thus isjust a Unix clone and not freelyavailable UNIX copy
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 8 / 14
History
Linux is Unix-like OperatingSystem
The code of UNIX is not copied,only the Operating SystemConcepts are properlyincorporated
The development of Linuxstarted from scratch and thus isjust a Unix clone and not freelyavailable UNIX copy
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 8 / 14
Free/Open Softwares good model
Closed softwares Like Windowsowners consider that lesspeople should the sourcecode,less is the chance ofgetting their products hacked
Sharply opposite, Open Sourcedevelopers consider that morepeople should know the sourcecode, more bugs will be foundand more people will contributeback fixing those bugs
A great example for this isUbuntu.
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 9 / 14
Free/Open Softwares good model
Closed softwares Like Windowsowners consider that lesspeople should the sourcecode,less is the chance ofgetting their products hacked
Sharply opposite, Open Sourcedevelopers consider that morepeople should know the sourcecode, more bugs will be foundand more people will contributeback fixing those bugs
A great example for this isUbuntu.
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 9 / 14
Free/Open Softwares good model
Closed softwares Like Windowsowners consider that lesspeople should the sourcecode,less is the chance ofgetting their products hacked
Sharply opposite, Open Sourcedevelopers consider that morepeople should know the sourcecode, more bugs will be foundand more people will contributeback fixing those bugs
A great example for this isUbuntu.
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 9 / 14
Why so many Linux Flavours ???
All Linux flavours are calledDistros which are a fancyterm for distributions
Since its Free and Open Sourcepeople are free to modify andrelease their own version andcopies
If you dont like you one distroyou can freely move to any otherone which you like for e.g- OpenSuse, Mandriva, Slackware etc
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 10 / 14
Why so many Linux Flavours ???
All Linux flavours are calledDistros which are a fancyterm for distributions
Since its Free and Open Sourcepeople are free to modify andrelease their own version andcopies
If you dont like you one distroyou can freely move to any otherone which you like for e.g- OpenSuse, Mandriva, Slackware etc
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 10 / 14
Why so many Linux Flavours ???
All Linux flavours are calledDistros which are a fancyterm for distributions
Since its Free and Open Sourcepeople are free to modify andrelease their own version andcopies
If you dont like you one distroyou can freely move to any otherone which you like for e.g- OpenSuse, Mandriva, Slackware etc
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 10 / 14
Why so many Linux Flavours ???
All Linux flavours are calledDistros which are a fancyterm for distributions
Since its Free and Open Sourcepeople are free to modify andrelease their own version andcopies
If you dont like you one distroyou can freely move to any otherone which you like for e.g- OpenSuse, Mandriva, Slackware etc
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 10 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Advantages Of Linux
Low Cost
Stablity
Performance
Network Friendliness
Flexiblity
Compatiblity
Fast and Easy Installation
Full use of Hard Disk
Multitasking
Security
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 11 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Who Uses Linux???
Almost all Hackers rely on linux
Almost all Supercomputers runs on Linux
Amazon.com online retailer recently switched entirely to Linux andsaved 17 million Dollars
Google, the most popular search engine on the web, runs on a clusterof over 1000 Linux servers
Wikipedia runs on linux since its birth and has shifted to Ubuntusince 2008
NYSE runs on linux
To see more unexpected places running on Linux, please visithttp://www.focus.com/fyi/information-technology/
50-places-linux-running-you-might-not-expect/
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 12 / 14
Major Distibutions
Open Suse
Red Hat
Debian
Knoppix
Fedora
Slackware
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 13 / 14
Thank You!!!
Vikash (LUG Manipal) An Introduction To Linux October 16, 2010 14 / 14
