What is operating system? Operating System and Its Function. Advantages and Disadvantages of Major OS’s. History of GNU/Linux. Features of Linux OS. The Indianized version of GNU/Linux OS: BOSS (Bharat Operating System Solutions). Directory Structure of Linux OS and Windows OS.

1. Operating System
and
Its Function

2. Created By:
Mr. Dipak Prasad
You can find me at:
@Dipak_Prasad1
fb/dpkprasad
www.dipak.co.in

3. What is operating system?
Definition:
• An operating system
(OS) is a collection of
software that
manages computer
hardware resources
Without a computer
operating system, a
computer would be
useless
“The operating system acts as
a Interface Between the user
and computer hardware”

4. Some Examples of Operating
System

5. Advantages and Disadvantages of
Major OS’s

6. Advantages & Disadvantages of
Windows
Advantages
Easy to
use
Update
Gaming
Familiar
Disadvantages
Expensive
Not
Stable
Not
secure

7. Advantages & Disadvantages Of
MAC OS
Advantages
Great
GUI
Better to
graphic
designer
Stable
Secure
Disadvantages
Not
gaming
expensive
Not all
software
run

8. Advantages & Disadvantages of
LINUX
Advantages
Free
Secure
Low pc
requirement
Disadvantages
Not all
software
run
Hard to
learn , use
and install
Not
familiarity

9. Functions of Operating System
Program Execution
Handling I/O operations
Manipulation of file system
Error Detection and handling
Resource allocation
Accounting
Information and Resource Protection

10. GNU/Linux

11. History
In 80's ,Microsoft's DOS was the Dominant OS
for PC.
Mac was better , but expensive.
UNIX was much better , but much more
expensive.

12. History
People was looking for a UNIX based system ,
which is cheaper , user friendly , and could run
on PC.
 DOS, Mac and UNIX Kernels was away from
development.
 Pay-to-develop!

13. GNU Project
Established by Richard
Stallman.
 GNU = “GNU is Not UNIX”.
Aim to develop a complete
UNIX-like operating system ,
which is free for copying and
modifications.
Richard Stallman

14. GNU Project
“Richard Stallman” established “The
Free Software Foundation” ,to support
GNU Project.
 It earns money from packing the
software with different tools “RedHat ,
SuSE,Slackware,...”.

15. What is Linux?
 Linux is a operating system that
was initially created as a hobby by
young student, Linus Torvalds, at
the University of Helsinki in
Finland.
The Linux Kernel i.e., the core of
Linux OS is developed and released
under the GNU – General Public
License and its source code is
freely available to everyone.
Linus Torvalds

16. Features of Linux OS

17. Linux Distribution (Version)

18. Linux Distribution (Version)
The Indianized version of GNU/Linux OS.

19. BOSS?
Linux distribution developed by C-DAC for
enhancing the use of Free/Open Source Software in
the country.
Made specifically for the Indian environment , it
consists of a pleasing Desktop environment coupled
with Indian language support and other packages that
are most relevant for use in the government domain.
The ultimate goal is to localize into all 22 official
Indian regional languages. So this benefits non-
english speakers to reach technology that bridge
digital divide in India.

20. BOSS Overview
 BOSS 1.0(tarang) – released in January 2007
 BOSS 2.0(anant) – released in September 2007
 Latest Version - BOSS 3.0(tejas)
 It consists of 3 sections:
 Install - The Installable allows the user to install the BOSS
GNU/Linux onto the Hard disk and work on it.
 Live - lets you to have the BOSS Desktop in your system
without installing it on your hard disk.
 Utility - consists of add-on packages that can be installed in
BOSS for some specific applications like web server,
education tools, openoffice language packages etc.
 BOSS 3.0 comes with two desktops – Gnome & KDE

21. BOSS FEATURES
 User Friendly Graphical Installer
 Indian version of OpenOffice – BharatheeyaOO
Auto detection of devices
 Hardware support for digital cameras, printers,
scanners, Bluetooth, Wi-Fi.
 Localization support for desktop
 Smart Common Input Method
 Internet tools –Pidgin, Firefox-3.0, X-chat, Ekiga
 Multimedia support

22. Directory Structure of Linux OS

23. Drives
Directory structures are Different
from Windows
Windows starts with drives, which
are explicit
– C:
– D:

24. Drives
 Linux does not make drives explicit.
You can have one physical drive,
several physical drives, partition the
drives into multiple partitions, and
normally you won’t be aware of it.
In a file manager, you won’t see
drives, just directories

25. Root
 In Windows, every drive has its own
root
– C: is the root of the C drive
 In Linux, there is only one root, no
matter how many drives you may have
– In Linux, / is the root

26. Comparison

27. Watch Out for....
Windows uses a backslash for everything
Linux uses a forward slash for everything
In Windows, case does not matter.
The C:Windows directory is the same as
The c:windows directory.
In Linux, everything is case sensitive. The
convention in Linux is to use lower case for
most things, but the important thing to
remember is that /usr/bin is not the same thing
as /USR/BIN.

28. Wild Cards
The special character,
‘?’ (question mark) and
‘*’ (asterisk)
are called wildcard in BOSS Linux. They are
useful in searching files because they give
flexibility in specifying paths and files.

29. The ? Wild Card
Memo?.doc Search
A question mark (?) in a
filename or file name
extension means that any
one or none character
can occupy that position.
Result:
Memo.doc
Memo3.doc
Memo5.doc
Memo7.doc
Memo9.com
And so on....
i.e. Any file starting with
memo following by exactly
any one or none character
and with an extension .doc

30. The ? Wild Card Cont...
?bc.exe Search
When ? Is the last character in the
primary or secondary name pattern,
then it goes for the one or none
character matching otherwise it goes for
exactly one character matching.
Abc.exe
Bbc.exe
Here A??.exe means A
followed by any two or less
characters and extension .exe
Sample list of files on the disk:
Ab.exe
Abc.exe
Ans.exe
Answer.exe
Ans2.exe
Aug.doc
Batch.dat
Bc.exe
Bye.doc
Bbc.exe
A??.exe Search
Ab.exe
Abc.exe
Ans.exe

31. The * Wildcard
The * (asterisk) replace
any number of characters.
Using the above sample list
Sample list of files on the disk:
Ab.exe
Abc.exe
Ans.exe
Answer.exe
Ans2.exe
Aug.doc
Batch.dat
Bc.exe
Bye.doc
Bbc.exe
A*.exe Search
Ab.exe
Abc.exe
Ans.exe
Answer.exe
Ans2.exe
As A*.exe means A followed
by any number of character
(but length should not exceed
eight in number) and
extension .exe.

32. ? And * Together
B*.ex? Search
Bc.exe
Bag.ex2
Bbc.exe