Why learn Linux.

Ermin Kreponic
A free video tutorial from Ermin Kreponic
IT Expert
4.2 instructor rating • 17 courses • 787,076 students

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Ermin Kreponic's Course for CentOS and Red Hat Linux - RHCSA

Learn the basics of CentOS and Red Hat Linux! Prepare and pass the Red Hat certified system administrator (RHCSA) exam!

16:42:37 of on-demand video • Updated April 2016

  • Learn the basics of CentOS and Red Hat Linux fast!
  • Get questions answered about CentOS, Red Hat Linux, and the RHCSA.
  • Find work on Upwork and other freelancing websites at $15 to $35+ per hour using the skills you learn in this course!
  • Pass the RedHat Certified System Administrator (RHCSA) exam.
  • Understand the basic functions of the Red Hat Linux operating system.
  • Create a Red Hat virtual machine on a Windows computer.
  • Dual boot Red Hat and another operating system.
  • Feel comfortable in the Linux graphical user interface (GUI) .
  • Know how to use the Yum packet manager and the Rpm package manager.
English Hello everybody. Today I wanted to create an addition to the introduction and I do believe that this will be a great use to you even though there is nothing technical in this tutorial, there is a bit of a motivation embedded into it. Basically here I wanted to deal with a subject "Why should anybody learn how to use Linux?" or "Why should anybody learn how to use RedHat or get their certification or anything of a kind?" Well, here is why. You might think, you might have this idea that most of the world runs either on Windows or on Mac, but that is simply not the case. If you just take a look at Google, at Facebook, at Twitter, at Ebay, at Paypal, all these servers, all these companies they pretty much completely run on Linux. I'm not sure about Ebay but like 99% sure that runs on Linux as well. All of these companies, they are the biggest companies, one of the biggest companies on the planet and they all run on Linux. All of their machines are running Linux, all their servers are running Linux, and if you want to get a job in any of those companies as a technical person or anything of a kind you will need to know a lot a great deal about Linux. Because pretty much the entire Google development platform is actually on Linux machines. All of it. Even though the employees can put their own computers into the company that can have any operating system installed on them, the main OS which they use is a platform for development is actually Linux. They use a version of Ubuntu that they've adapted to their own needs. Anyway, as I said if you look at Facebook as well, all of their servers from beginning till this day on today, they run on Linux. But okay, that might not still be enough for you. You might still think "Oh, well. There is bound to be something else, there's bound to be a something more other than those few companies. Well, let me tell you something. All of your Android phones that you have, that you carry in your pockets or that you see on TV or whatever, they all run on Linux as well. Your smart TV is run on Linux. I don't know what else do you need basically. Even though the desktop computers till this day on today, most of the desktop computers do run on Windows, and the marketshare is pretty low there for Linux, that is nothing. Just imagine all the Android phones, they run on Linux, all the major companies run on Linux pretty much not all but certainly a very large portion of servers like 90% of them in the world run on Linux-based systems. Your routers, pretty much all routers they run on Linux as well. Be it your home router or your Cisco router or they don't necessarily need to run on Linux but they run on a derivative of Linux. Cisco routers, Juniper routers, the commands on the Juniper router pretty much the same as within a Linux terminal. The environment is very similar, that's fantastic for me and for a lot of people out there. Even the desktop is slowly being taken over by Linux more so in the recent years than in the past. Why so? Well, first of all, it's completely free. Most of it anyways. In certain cases only if you want support you pay. Only if you want professional support or something then you pay for that support. You subscribe or something of a kind. But the operating system in and off itself is free, you just go on to the net, download it and run it. That's one of the reasons. Second reason is, although this might not be the case to greatest of extents with Windows 8.1, Linux is generally far more secure than any Windows or Mac based operating system. Why? Well, one of the main reasons I suppose is the fact that it is less used for desktops, so therefore there's less interest to develop viruses and something of a kind. However that is not the only case for it, okay, yeah true. There are pretty much no viruses out there for a Linux-based operating system. There are few antivirus systems for it, but they're generally not used. Primarily because the system itself is very secure. So even if you could download a virus as a regular user from the net or something of a kind to install anything you require route privilege, so even though it's sitting there in your computer, it won't be able to do anything. Security is a major part of Linux, you won't have any problems with viruses, your system will be very secure provided of course that you at least configured properly to a good extent. However, desktop users, people who uses a browser mainly nothing else pretty much, actually Linux would be prefect for them. But they tend to use Windows primarily because they are used to it. In Linux you never have to see the terminal if you do not want to. I use a terminal, people in the business use the terminals always, even desktop users use the terminals primarily because you can get things done a lot faster and the true power rests there in the blessed terminal. However, if you don't want to as a desktop user you will never have to use it. It will not be a requirement. But I just wanted to make this a very brief video just to show everybody and explain that most of the world out there, most of the appliances, most of the devices out there in the world, network devices, computers, servers etc., super computers are run on Linux. Pretty much all the super computers are run on Linux-based operating systems or on the Linux that we know and use in our daily lives today. As I have mentioned previously, Windows and Mac do cost money to buy, while you can do pretty much everything and more with Linux-based operating systems without a paying a cent. I mean completely free. Although you will encounter some problems inevitably with applications. For example Adobe Suit, Adobe Photoshop or something of a kind will generally not work on Linux, even with compatibility layer Wine you're going to have problems and it's not going to work there. So in the application section for desktop it's still lacking a little bit. Also in sense of gamers, Linux is definitely not for gamers. I mean if you are an average gamer who doesn't actually require super performance, to set everything to Mac sound settings and graphics and stuff like that, you'll able to run most of the games without any problems on medium settings, something like that. With a compatibility layer you won't need to download anything specific for Linux, you can just download a Windows game and run it on Linux with Wine without bigger problems. Most of the things will run, sometimes you will encounter some problems but most of the time, it will run. So those are the two problems that Linux encounters, but I just wanted to show this picture to you as I have overly stated that most of the world, most of the businesses, most of the places where you can get a job or you can work, they actually run on Linux-based operating systems. Banks especially. Maybe not the banks' computers like the one that you see when you walk to the reception. But the infrastructure of the bank, their servers and the stock market especially. So the stock market in New York, pretty much all of the servers are on a Linux system. That is what I want to show you, that most of the world runs on Linux, that is where you can find jobs. I'm not saying you cannot find jobs with Microsoft or with Windows or something of a kind, but you are far more likely to find something with Linux. Even though it's free operating system, because companies do use, they do need people actually to operate it and to do stuff with it. If you possess that knowledge you definitely have a better opportunity, a better chance out there to be employed, to find work and make an income. Aside from that Linux is highly customizable. There is pretty much nothing that you cannot do, primarily because it's open source and you get a variety of desktop versions for it. So, let's say you want to download Fedora which is an open source RedHat free distribution for desktop users. Basically you can get a Gnome desktop, LXD desktop, you can get a KDE desktop, we will get into all of this once we get to the GUI part and all of that. But what I wanted to say is when you're using Windows or Mac, you're pretty much stuck with one desktop without extensive customization. Well in the other hand with Linux, you can just download the spin that you want. So if you want a KDE spin Fedora, you just download that one. If you want Gnome spin Fedora, you just download that one, and you get a completely different desktop. They differ to a very very large extent, the user interfaces are completely different but the terminals are always the same. The terminal commands are always the same, that is why when you're doing something via the terminal, it is a universal way of doing things. It does not vary from one distribution to another to a significant extent. It's pretty much the same everywhere. In any case if you still have some doubts, feel free to post them in the discussion section. But there is one more thing that I wanted to address in this tutorial. That is the format for your questions in the discussion section. Now, it would be good if you encounter any errors or any problems during this course, while you follow it, and you're bound to encounter some problems, that's normal. It happens to everybody. You're unable to do something, you've installed it in one system, the triverse or not, or you don't have the drivers for that. Some problems, doesn't matter what it is, if you're posting it in the discussion just say from which lecture it is, copy the error message, post it there, and then explain your problem. Also explain what you have tried to do and procedure that you have used in order to actually attempt to do that. I don't say this to make my job easier, I just say this to, even though I check the discussions on Udemy on daily basis and I try to answer everybody as fast as I possibly can, usually everybody gets a response within 12 hours or less. But you know when I don't have all the information, I basically have to write an answer "Could you please provide an error message or something like that?" and then that adds a lot more time and you need to read it and you need to find your message again, then you need to post it and you need to wait for me to check it out again. Basically you can save yourselves a lot of time by just posting the other message, by listing the procedure that you have done, and perhaps explaining the setup, but most importantly of all specifying which lecture were you following and where did you have, encounter the problems. So if you just post these things I will be able to help you a lot better in a far shorter time frame so to say. Anyway, also in the discussions feel free to ask me about anything related to Linux, there's nothing that is outside of the scope. You can ask pretty much anything, I will be more than happy to pretty much provide any information that I can on pretty much any subject that is related to Linux either directly or indirectly. In any case that would be all for now. In the next tutorial we will get into the stuff, we will actually start doing things, we will get technical, and approach without fear. Don't let that stop you or deter you or something of a kind. If you encounter difficulties in the beginning it's okay, we've all encountered them. It was difficult for pretty much for everybody. If you just stick with it for a little while you will see it gets a lot easier after some period of time. I remember when I started using it for the first 6 months up to a year, I was completely lost, like errors at every corner. But after half a year or something like that using Linux, playing around with it on my own without any courses, I pretty much felt, I started feeling comfortable with it. No problems. You will do this in a far shorter period of time, because I will introduce you to it step by step and you will see, you will become very comfortable with Linux after you have finished this course. Anyway I'll see you in the next tutorial.