Linux

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LinuxOperating System

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Operating System, Definition

“ The master control program that runs thecomputer. It is the first program loadedwhen the computer is turned on”

Functions Performed by an OS are:User Interface

Task Management

Data Management

Device Management

Security

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Examples of Operating

Systems DOS (Disk Operating System)

Windows ( 95 , 98 , Me , 2000 , XP ,

Vista)

Unix ( OpenBSD, Free BSD , Solaris)

Macintosh ( Mac OS X)

Windows CE ( Compact Edition)

Symbian OS

&

Linux

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History of Linux

Developed by “Linus Torvalds” a

student of “University of Helsinki” in

“1991”

Torvalds put Linux Source Code on

Internet.

Developers showed interest and Linux

started to grow.

Still thousands of developers are

programming Linux and Software for

Linux using Internet.

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Linus Torvalds & Linux Symbol

History of Linux (Contd.)

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Why the name Linux?

Linux was made as a free and Open

Source version of Unix.

And it was developed by Linus

Torvalds

So

Linus + Unix = Linux

Linux is pronounced many ways, and

all of them are correct.

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What is Linux Linux

A Unix like computer

operating system assembled

under the model of free and

open source software

development and distribution.

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Distributions of Linux Today

Red Hat Linux

Fodora ( new name of Red Hat)

Mandrake

SuSe

Mandriva

Caldera

Debian

& many more because every one can develop a version.

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Open source software GNU

General Public License. Typically Linux is packaged in a format

such as a Linux distribution for desktop and server use.

Some popular mainstream Linux distributions include Debian (and its derivatives such as Ubuntu), Fedora and open

Suse.

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Linux is free and open source

software

The development of Linux is one of the most prominent examples of free and open source software collaboration:

The underlying source code may be used, modified, and distributed commercially or non commercially by anyone under licenses .

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Linux Supported Platforms

Linux can run every where from Hand

Held devices to Super Computers

Some of Nokia N-Series Mobiles use

a Compact Version of Linux.

Most of the Supper Computers today

run Linux Operating System.

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Distributions Rating

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Linux Design

Linux Supports all the commands of Unix using various Command Shells.

Linux Now also supports Graphical User Interfaces.

Unlike Windows , we can change the look and feel of Linux the way we want.

We have an Option of Windowing Environment, Like:◦ KDE ( K Desktop Environment)

◦ Gnome

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Linux Desktop

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Linux Desktop

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Uses of Linux

Linux is Used mostly as a Web Server

Operating System , due to it’s stability

and reliablity.

“Google” runs Linux on it’s more than

ten thousand Web Servers.

Now a days with the help of

Commercial Packages such a

RedHat’s Fedora Core 8 Linux can be

used for desktop computers.

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Linux as a Desktop Operating

System X Windows System for

displaying Graphics.

Mozilla Fire Fox ( web browser)

Open Office .Org , a free replacement for Microsoft Office.

XMMS ( Multimedia Player)

GIMP ( Image Editing)

& thousands of applications with all major distributions like Fedora Core 8.

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Wine

A major attraction of Windows Operating System is Games , it supports:

Commandos

Fifa

Cricket

Age of Empires etc.

Wine now allows to run Windows Games and Other Software Developed for Windows to run on Linux.

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Linux for Programmers

Plenty of Tools to program in:

GCC ( A C/C++ and Java Compiler)

QT ( allows developing GUI

applications)

KDevelop ( Like Microsoft Visual

Studio)

Quanta Plus ( Web Development Tool)

Emacs ( Best ever source code editor)

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Some Comparison Between

Linux and Microsoft Windows. Windows Linux

Microsoft Office open office

.org

Visual Studio Kdevelop

DirectX OpenGL

Windows Installer RPM

Internet Explorer Mozilla fire fox

Full of Viruses virus free

Mostly Crashes Never crashes

Only on PCs On all

computers

Windows Media Player XMMS

Adobe Photoshop GIMP

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Cost Comparison between Linux and

Windows OS / Products Windows

Windows 7 Pro. (Rs.17,000)

Windows Server 2008 (Rs. 85,000)

Microsoft Office 2007 (Rs.27,900)

Visual Studio 2008 Pro. (Rs. 51,000)

MSDN 2008 Pro. (Rs. 50,000)

SQL Server 2008 EE (Rs.21,20,000)

3d Studio Max (RS. 510,000)

Adobe Photoshop (Rs. 42,500)

Linux

Fedora Core 8 (Free)

RedHat Enterprise Edition 5 (Free)

Open Office.Org (Free)

Kdevelop + GCC (Free)

Unix Man Pages (Free)

My SQL ( Free)

Blender 3d (Free)

GIMP 2.5 (Free)

Price Listings are according to Microsoft Web Site.

Linux Tools are equal in functionality or some times even better than that of Windows.

In Pakistan,We don’t know actual prices of Microsoft Products and other commercial products because we purchase pirated software.

We pay Rs30 which is price of CD not that of software.

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The End