The document provides an introduction to the Linux operating system. It discusses the history of Linux, noting it was developed by Linus Torvalds in 1991 based on UNIX and intended to be open source and free. It describes Linux as a free operating system that includes software applications. Popular Linux distributions are then listed such as Red Hat, Debian, Ubuntu, and Gentoo. The core components of the Linux operating system structure are outlined as the user, shells, kernel, and hardware. Key features of the kernel and shells are defined. Security advantages of Linux and popular text editors in Linux like Vi and Emacs are also summarized.

1. Sharanbasaveshwara College of
Computer Application
Kalaburgi

2. Seminar presentation on
LINUX operating system

3. INTRODUTION TO
LINUX
• History of Linux
• Defination of Linux
• Operating system
based on LINUX
• Structure of LINUX
os

4. LINUX DESKTOP

5. History of LINUX
• It was developed by Linus Benedict Torvalds
in 1991 based on UNIX which was developed
using C
• Linux was supposed to be named as “FREAX”
• Because it was "free” open source operating
system and the letter X to indicate that it is a
Unix based OS
• Linux is available in Internet and in the form of
CD copy without cost

6. • Linux is a Free Operating System ,
which includes the set of
softwares and which enables the
computer applications and users
of the computer system

7. Operating System Based On
LINUX
• RED HAT
• DEBAIN
• UBUNTU
• GENTOO
• PACKMAN
• FEDORA

8. Structure of LINUX OS
• 1.User
• 2.Shells
• 3.Kernal
• 4.H/W

9. Kernel
• Kernel is the core or nucleus of an
Linux OS. It is responsible for all
major activities of this operating
system. It is consists of various
modules and it interacts directly with
the underlying hardware.

10. Shells
Linux provides a special interpreter
program which can be used to
execute commands of the operating
system. It can be used to do various
types of operations, call application
programs etc.

11. System Library
• System libraries are special
functions or programs using
which application programs or
system utilities accesses Kernel's
features

12. Hardware
• Hardware is traeted as a file , it
may be a program , a directory or
a sub directory
• It ressembles the true structure
with its root at the top

13. Artitechture Of LINUX

14. Security
• Over the last few years, system security has
gained a lot of momentum and software
professionals are focusing heavily on this aspect.
Linux is often treated as a highly secure operating
system
• A very true statement of a UNIX/Linux system,
everything is a file; if something is not a file, it is a
process. Most files are just files, called regular
files; they contain normal data, for example text
files, executable files or programs, input to or
output from a program and so on.

15. Advantages
• Linux is Free
• No threat of viruses
• Freedom to study how the programs work. i.e source
code will be accessible
• We can make change as per our requirement
• Linux comes with most of the required software pre-
installed ( MODZILLA FIREFOX , OPENOFFICE.ORG for
word processing program and more)
• Linux never gets slow
• Can Perform MULTITASKING & MULTITHREADING.

16. Text editors of LINUX
Vi
Emacd
gEdit
kWrite

17. By
Nikhil Kumar
5th sem