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Linux Agenda Exploring Operating System History Applications
1. Agenda
What is Linux
History of Linux
Linux Today
Open Source Software
Popular Linux Distributions
Software Applications
Languages Supported by Linux
Why to switch to Linux?
Why not to switch to Linux?
Comparison between Linux and Windows
2. What is Linux
UNIX like Operating System
Multi-user, Multitasking, Multiprocessor
Has the X Windows GUI
Runs on multiple hardware platforms
Source Code is available
3. History of Linux
• In 80’s, Microsoft’s DOS was the dominant
OS for PC
• Apple MAC was better, but expensive
• UNIX was much better, but much, much
more expensive. Only for minicomputer for
commercial applications
• People were looking for a UNIX based
system, which is cheaper and can run on
PC
4. History of Linux
• Both DOS, MAC and UNIX were
proprietary, i.e., the source code of their
kernel is protected
• No modification is possible without paying
high license fees
• A famous professor Andrew Tanenbaum
developed Minix, a simplified version of
UNIX that runs on PC
– Minix is for class teaching only. No intention for
commercial use
5. History of Linux
• In Sept 1991, Linus Torvalds, a second year
student of Computer Science at the University
of Helsinki, developed the preliminary kernel
of Linux, known as Linux version 0.0.1
6. Linux Today
• Linux has been used for many computing
platforms like PC, PDA, Supercomputers, ...
• Not only character interface but also user
interface is available
7. Linux Today
The Oak Ridge National Laboratory's Jaguar
supercomputer, as of November 2009 the
world's fastest supercomputer. It uses the Cray
Linux Environment as its operating system.
9. Open Source Software
When programmers on the Internet can read,
redistribute, and modify the source for a
piece of software, it evolves
People improve it, people adapt it, people fix
bugs. And this can happen at a speed that,
compared to conventional software
development, seems astonishing
10. How do we get it?
Download it from the Internet
From a “Distribution” (e.g. RedHat)
− Linux kernel
− X Windows system and GUI
− Web, e-mail, FTP servers
− Installation & configuration support
− 3rd party apps
− Hardware support
11. Why is it significant?
Growing popularity
Powerful
− Runs on multiple hardware platforms
− Users like its speed and stability
− No requirement for latest hardware
It’s “free”
− Licensed under GPL
− Vendors are distributors who package Linux
13. Software Applications
OpenOffice: word processing, spreadsheets,
drawing
Adobe Acrobat Reader
Konqueror: The KDE File Manager and Web
Browser
Kmail: The KDE Mail Application
Evolution: An Email and Calendar Program
XMMS, VLC: Multimedia Applications
14. Software Applications
TV, Video, Radio, and Webcam
K3b: The KDE CD Burning Application
Digital Cameras
Kooka: Scanning Application
Graphics with the GIMP
Powerful Shell system (Console)
17. Why to switch to Linux?
Security: Linux will keep our systems away
from Malware and Viruses
Cost: Linux is the most cost efficient OS in
the world. Why? Because it’s free...and not
only is it free, it also (typically) comes with
applications that would cost hundreds,
hundreds if not thousands of dollars
Linux is highly resistant to System Crash and
rarely needs rebooting
18. Why to switch to Linux?
Ease of use: Linux is extremely easy to use.
If you know Windows, you’ll be able to work
easily in Linux...
Linux plays well with others: Linux includes
software to make it easy to network with
Windows, Macs, and other Linux based
computers
Support is everywhere: If you’re having a
problem with Linux, help is as close as the
nearest message board.
19. Why not to switch to Linux?
If you are using any propriatory software
which is not supported by Linux
If you are using any hardware which is not
supported by Linux