A list of top frequently asked Linux interview questions and answers are given below. 1) What is Linux? Linux is a UNIX based operating system. Linus Torvalds first introduced it. It is an open source operating system that was designed to provide free and a low-cost operating system for the computer users. Linux Operating Systems Seminar and PPT with PDF Report: Linux is Developed in 1991 by Linus Torvalds. It is Multi-user, Multitasking, and Multiprocessor. Coexists with other Operating Systems. Runs on multiple platforms.
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UNIX is multitasking and multiuser computer operating systems. UNIX operating system was started making in 1969 and was ready in 1971 at the Bell Labs research center by Dennis Rotchie, Ken -Thompson and others. The UNIX operating system was launched in 1973. UNIX operating system designed in Cprogramming language.
Package Management: Debian Packager with APT Desktop Environment: Gnome Classic (also contains Unity & Gnome Shell) Kernel Version: 3.2.0.30.32 OS.
The UNIX operating system is made up of three parts:-
- The kernel: The kernel of UNIX is the hub of the operating system.
- The shell: The shell acts as an interface between the user and the kernel. When a user logs in, the login program checks the username and password, and then starts another program called the shell.
- The programs: All computer programming.
GNU is an operating system and an extensive collection of computer software. GNU is composed all of free software, most of which is licensed under the GNU Project’s own General Public License (GPL).
Fedora Project was a Linux distribution project. In Fedora Project, make a Fedora Linux operating system which developed by Red Hat Inc. Red Hat Enterprise (RHEL) is open source Linux operating system. Linux operating system can be customized by the developer according to his needs.
Linux is open source Unix like operating systems. Linux released on 17, September, 1991 by Linux Torvalds. Linux operating system is Kernel based operating system. Its file name case-sensitive.
Advantages of Linux operating system:
- Linux operating system is available in free of cost.
- It’s a virus free operating system.
- It’s more secure windows operating system.
- Its light weight operating system.
What is Linux?
LINUX is an operating system or a kernel distributed under an open-source license. Its functionality list is quite like UNIX. The kernel is a program at the heart of the Linux operating system that takes care of fundamental stuff, like letting hardware communicate with software.
Why do you need an OS?
Every time you switch on your computer, you see a screen where you can perform different activities like write, browse the internet or watch a video. What is it that makes the computer hardware work like that? How does the processor on your computer know that you are asking it to run a mp3 file?
Well, it is the operating system or the kernel which does this work. So, to work on your computer, you need an Operating System(OS). In fact, you are using one as you read this on your computer. Now, you may have used popular OS's like Windows, Apple OS X, but here we will learn introduction to Linux operating system, Linux overview and what benefits it offers over other OS choices.
Who created Linux?
Linux is an operating system or a kernel which germinated as an idea in the mind of young and bright Linus Torvalds when he was a computer science student. He used to work on the UNIX OS (proprietary software) and thought that it needed improvements.
However, when his suggestions were rejected by the designers of UNIX, he thought of launching an OS which will be receptive to changes, modifications suggested by its users.
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The Lone Kernel & the early days
So Linus devised a Kernel named Linux in 1991. Though he would need programs like File Manager, Document Editors, Audio -Video programs to run on it. Something as you have a cone but no ice-cream on top.
As time passed by, he collaborated with other programmers in places like MIT and applications for Linux started to appear. So around 1991, a working Linux operating system with some applications was officially launched, and this was the start of one of the most loved and open-source OS options available today.
The earlier versions of Linux OS were not so user-friendly as they were in use by computer programmers and Linus Torvalds never had it in mind to commercialize his product.
This definitely curbed the Linux's popularity as other commercially oriented Operating System Windows got famous. Nonetheless, the open-source aspect of the Linux operating system made it more robust.
Linux gets its due attention
The main advantage of Linux was that programmers were able to use the Linux Kernel to design their own custom operating systems. With time, a new range of user-friendly OS's stormed the computer world. Now, Linux is one of the most popular and widely used Kernel, and it is the backbone of popular operating systems like Debian, Knoppix, Ubuntu, and Fedora. Nevertheless, the list does not end here as there are thousands of Best versions of Linux OS based on the Linux Kernel available which offer a variety of functions to the users.
Linux Kernel is normally used in combination of GNU project by Dr. Richard Stallman. All mordern distributions of Linux are actually distributions of Linux/GNU
The benefits of using Linux
Linux OS now enjoys popularity at its prime, and it's famous among programmers as well as regular computer users around the world. Its main benefits are -
It offers a free operating system. You do not have to shell hundreds of dollars to get the OS like Windows!
- Being open-source, anyone with programming knowledge can modify it.
- It is easy to learn Linux for beginners
- The Linux operating systems now offer millions of programs/applications and Linux softwares to choose from, most of them are free!
- Once you have Linux installed you no longer need an antivirus! Linux is a highly secure system. More so, there is a global development community constantly looking at ways to enhance its security. With each upgrade, the OS becomes more secure and robust
- Linux freeware is the OS of choice for Server environments due to its stability and reliability (Mega-companies like Amazon, Facebook, and Google use Linux for their Servers). A Linux based server could run non-stop without a reboot for years on end.
Is it for me?
Technical Detailscylon Linux Operating Systems
Users, who are new to Linux, usually shun it by falsely considering it as a difficult and technical OS to operate but, to state the truth, in the last few years Linux operating systems have become a lot more user-friendly than their counterparts like Windows, so trying them is the best way to know whether Linux suits you or not.
There are thousands of Best Linux OSs and Linux softwares available based on the Linux Kernel; most of them offer state-of-the-art security and applications, all of it for free!
This is what Linux is all about, and now we will move on to how to install Linux and which Distribution you should choose.
I am asked to Learn Unix? Then why Linux?
UNIX is called the mother of operating systems which laid out the foundation to Linux. Unix is designed mainly for mainframes and is in enterprises and universities. While Linux is fast becoming a household name for computer users, developers, and server environment. You may have to pay for a Unix kernel while in Linux it is free.
Technical Detailscylon Linux Operating System Command
But, the commands used on both the operating systems are usually the same. There is not much difference between UNIX and Linux. Though they might seem different, at the core, they are essentially the same. Since Linux is a clone of UNIX. So learning one is same as learning another.