Hello everybody.
Today I wanted to
create an addition to the introduction,
and I do believe that this would be of
great use to you. Even though there's
nothing technical in this tutorial, there
is a bit of motivation embedded into
it. Basically, here I wanted to deal with
the subject, why should anybody learn how
to use Linux? Or, why should anybody learn
how to use Red Hat, or get their
certification, or anything of a kind. Well,
here's 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 it runs on Linux as well. All of these
companies, they are the biggest
companies, some of the biggest companies
on the planet, and they all run on Linux.
All of their machines are running Linux, all of their
servers are running Linux, and if you
want to get a job at any of those
companies as a technical person or
anything of a kind, you will need to know
a great deal about Linux. Because
pretty much the entire Google
development team, not the team
the entire Google development platform,
is actually on Linux machines. All of
it. Even though the employees can bring
their own computers into the company
that can have any operating system
installed on them,
the main OS which they use as 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 take a look at
Facebook as well, all of their servers,
from beginning until
today, they run on Linux. But, okay,
that might
still not be enough for you. You might
still think, oh, well, there is bound to be
something else, there is bound to be
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 you see on television, or whatever,
they all run on Linux as well.
Your smart TVs run on Linux. I don't
know, what else do you need? Basically,
even though the desktop computer still to
this day, most of the desktop
computers do run on Windows, and the
market share is pretty low for
Linux, that is nothing. You can just
imagine, all of 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, they don't necessarily
need to run directly on Linux, but they
run on a derivative of a Linux. Cisco
routers, Juniper routers, the commands in
the Juniper router are 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. And even the
desktop is slowly being taken over by
Linux, more so in the recent years than
in the past.
Why? Well, first of all, it's completely
free. Most of it, anyway.
In certain cases, only if you want
support you pay. Only if you want
professional support, or something of a
kind, then you pay for that support. You
subscribe or something of a kind. But, the
the operating system in and of itself is
free. You just go on to the net, download
it and run it. That's one of the reasons.
The second reason is, although this might
not be the case to the greatest of
extents with Windows 8.1,
Windows is, not windows but, sorry, 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's a
less used desktop. So, therefore, there
is less interest to develop viruses and
something of a kind. However, that is not
the only case for it. I mean, OK, true,
there are pretty much
no viruses out there for a Linux based
operating system. There are a few
antivirus systems for it but they're
generally not used, primarily because the
system itself is very secure. So, even if
you were to download a virus as a
regular user from the net, or something
of a kind, to install anything you
require root privileges. So even
though it's sitting there on 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 configure it properly to a
good extent. However, desktop users, people
who use the browser mainly and
nothing else pretty much,
Linux would be perfect 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 the 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 very brief video just to show
everybody and explain that most of the
world out there is actually, most of the
appliances, most of the
devices out there in the world, network
devices, computers, servers, etc,
supercomputers are run on Linux. Pretty
much all of the supercomputers are run on
Linux based operating systems, or on the
Linux that we know and use in our daily
lives today. Plus, as I've
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
paying a cent. I mean completely free.
Although, you will encounter some
problems inevitably with applications,
for example the Adobe suite, Adobe Photoshop,
or something of a kind, will generally
not work on Linux. Even with the
compatibility layer wine, you're gonna
have problems and it's not gonna work
there. So, in the application section for
desktop it's still lacking a little bit.
Also, in the instance of gaming, for
gamers,
Linux is definitely not for
gamers. I mean, if you are an average
gamer who doesn't actually require super
performance, like to set everything
to maxed out settings on graphics, and
stuff like that, you'll be able to run
most of the games without any problems
on medium settings, or 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 already stated
that most of the world, most of the
businesses, most of the places where you
can get a job where you can work, they
actually run on Linux based operating
systems. Banks especially. Maybe not the
bank's 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
there are on a Linux system, and that is
what I want to show you. Most of the
world runs on Linux. That is where
you can find jobs. I'm not saying that
you cannot find jobs with Microsoft, or
with Windows, or something of a kind, but
you're far more likely to find something
with Linux. Even though it's a free
operating system, because companies do
use it they do need people to actually
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 Red Hat free
distribution for desktop users. Basically,
you can get a gnome desktop, or you
can get lxd desktop, or 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 that
when you're using Windows or Mac you're
pretty much stuck with one desktop
without extensive customization. Well, on
the other hand, with Linux you can just
download the spin that you want. So if
you want a KDE spin of Fedora you just
download that one. If you want a gnome spin
of Fedora you can 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 and
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 on one system,
you don't have the drivers for
that, some problems. It doesn't matter what
it is. If you're posting it in the
discussion, just say which lecture
it is from, copy the error message, post it
there and then explain your problem. Also,
explain what you have tried to do and
the 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 a
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 then you need to read it, and then
you need to find the error message again,
and 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 error
message, by listing the procedure that
you have done, and perhaps explaining the
setup. But, most importantly,
specifying which lecture
you were following, and
where did you encounter the
problems. So, if you just post those
things I will be able to provide, or I
will be able to help you a lot better in
a far shorter timeframe. Anyway,
also in the discussions, feel free
to ask me about anything related to
Linux.
There is 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 will 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 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 everybody. If
you just stick with it for a little
while, you will see it gets a lot easier
after a certain period of time. I
remember when I started using it for the
first six months up to a year I was
completely lost.
Errors at every corner. But, after
half a year, or something like that,
of using Linux, of 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 amount of time
because I will introduce you to it step
by step, and you will become
very comfortable with Linux after you
have finished this course. Anyway, I'll
see you in the next tutorial.
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