LINUXFREEDOM.CHOICES.BEAUTIFUL

BY Prateek arora

What is operating system ?

• Operating system is an intermediary b/w user and computer hardware.

• It's provides conveniently & efficiently environment to user.

• An os controls or help in the allocation of resources and services such as memory,processors,devices and. Information.

• In a simple word i can say that :-

• os is a program that run from start of pc to

shutdown of pc. It’s also called as kernel.

What’s is Linux ?

OS

Linus unix

GNU

• Linux was developed by Linus Torwalds Of finland, who currently owner of linux trademark.

• linux is an os which is developed by a collaboration , it means no company is responsible for its development.

• Using open source code of LINUX KERNEL,Company have been developing os based on LINUX KERNEL.its called "linux distributions".

History Of LINUX $ UNIX

Unix os was developed by Ken Thompson & Dennis Ritchie at AT&T bell Laboratories in 1969 and first released in 1970. Its is not a multiuser os.Multiplexed Information and Computing Service (Multics).

So,UNIX was rewrite in 1973 by c language.

IN 1983,Richhard Stallman started the GNU PROJECT(free cost)with the goal of creating a free UNIX.

BUT,HE was fail to make UNIX GNU.

Another free os project was started in 1977,by Berkeley software

distribution (BSD). But due to lack of support .UNIX was not become free.And its become a commercial product by :- HP-UX, SunOS,AIX,etc.

Q1. Why Dennis Ritchie is become a father of unix?

Q2. How WE GET OPEN SOURCE OF LINUX?

Q3. WHO UNIX/LINUX ARE MUILTUSER AND MUILTITASK ON ONE CPU?

FOUCES QUES ?

• Linus Torvalds , was the student of university of Helsinki in Finland , Developed linux in 1991.

• IT,s main purpose to Develped LINUX was released linux free on INTERNET.

• LINUX is the name of KERNEL.

• KERNEL is a program whish is a central CORE of os.

HISTORY OF LINUX

LINUX

UNIX

GNU

•A Distribution is the LINUX operating system,In this Different-2 company change the minor changes by the available open source code.

LINUX DISTRO

TOP LINUXDISTRO

DISTRO

Linux Mint

openSUSE

Ubuntu

Fedora

RedHat

Debian

CentOS

Debian

Difference b/w Distro

SERVER

SOURCES Linux Windows

Cost Free For Everyone. $119-199.99

Development & Distribution Open sources Development. Developed & Distribution by Microsoft.

Licence Free Proprietary

Update method Different Windos update

Default User Interface Gnome or KDE(Depends on distro) Graphical (Windows Aero)

Stability Linux systems are well known for their ability to run for years without failure; in fact, many Linux users have never seen a crash.

Windows servers must often be defragmented frequently, that's all but eliminated on Linux.

Linux OS is Virus Free?• No! No OS on this earth can be ever be

100% immune to Viruses and Malware. But still Linux never had a widespread malware-infection as compared to Windows.

• Linux is architecturally strong and hence very much immune (not totally) to security threats.

Some Know Linux Threats:-ViruesTron horsesLocal ScriptsWeb ScriptsWormsTargeted AttacksRootkits, etc.

Android (operating system)

Android is a mobile operating system (OS) currently developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets.

User share of operating systems

NOTE:- IN south Area 99% user are using linux.

Most Hacking Tools Are Written for Linux:-Well over 90% of all hacking tools are written for Linux. Of course, there are exceptions like Cain and Abel and Havij, but those exceptions simply emphasize the rule. Even when hacking tools such as Metasploit or nmap are ported for Windows, not all the capabilities transfer from Linux.

Linux Is Open SourceUnlike Windows, Linux is open source. What that means for us is that the source code of the operating system is available to us. As such, we can change and manipulate it as we please. If you are trying to make a system operate in ways it was not intended, being able to manipulate the source code is essential.

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REDHAT Linux Training certification

NOW STUDENTS U CAN TELL WHICH IS BEST?

Windows vs Linux

Thanks