Now for the Unix architecture will actually be Linux as well.
All right, so as you can see, this diagram is the basic lock of the Unix system architecture.
So you can see that the first thing we have, the upper layer, which is the application programs.
So we have the mail, FTB, the utilities, the DBMS and so on.
All right.
So this is the application there.
Then we have the shell layer and the chillout here.
It's the Basche, the rich industrial session with the more the command's environment, OK, TBP and
so on.
Now we have the inner kernel layer and we have the hardware, OK.
So as you can see the shell communicate between the applications and the can.
OK, all right.
Now let's have a detailed actually a detailed information.
So here are the moment, the main cause of death, all the vision of Unix.
So the first thing it is dickin.
So the kernel, as you can see, the one here, it's the heart of the operating system.
It interacts with the hardware and the most of the task, like memory management, task scheduling and
fine management.
OK, so here the kernel is the one that's responsible to control the hardware.
All right.
But we control it by using the ship.
All right.
So the here is the utility that processes your request when you type in a command at your terminal,
the inter interpret the command and of course, the program that you want.
So they should use a standard syntax for all the commands.
The station, for example, bombshell confession or the most famous searches which are available with
most of the Unix.
OK, so here are the Schill.
It has a lot of shades like the seashell, the Courchevel dash, whatever.
OK, so you put your command, interpret it and it will handle it or it will communicate directly with
the unit and then the colonel communicate with the.
So no one can communicate through the hardware immediately.
Only the kernel and the shell communicate through can.
And of course if you have a root beer machine or full permission permission, then you can do things.
Only the user admin can do it or the user can do it.
All right.
Now for the commands and utilities, as you can see, there are various commands and utilities which
can be used in your day to day like the copy move, Kat.
Great.
OK, so some of the examples, they are actually, as they mentioned here, 250 standard commands plus
then in numerous others provided like or through the third party software.
So, for example, the ones for the use like Invidia Somali or whatever, actually these these are third
party.
So by default, if you type and we the duchess, for example, to see to check your end video, it will
show you that phone.
Right.
OK, now this command actually is considered a third party and so on.
OK, now finally we have the files and directories like all the Unix is organizing to files.
The Unix or even Unix in urbanise into files and or files are then organizing to directories.
And these directives are further organized, a tree like structure called the file system.
Now, actually, don't worry about the commands.
Don't worry about the files, the management, the processes, management.
All of the commands at these will be handled in a separate lectures and indicate OK with a practical
way.
OK, so don't worry all.
But again, here are the diagram for the architecture of Unix or Linux.
We have the application.
Then we have the schill, we have the kernel, we have the hardware, the application here, which is
the mail that FTB, the telnet actually the terminal emulator considered to be application, OK, because
the terminal is something different than the shell, actually the terminal emulator act as the schill
to be something built up to us.
OK, and the shell is that concept or is that the term that responsible to communicate with.
OK, so it is as illogical.
Not as I think.
OK, so finally we have the Kurnit and the hardware.
Nardwuar like the keyboard.
The disk.
All right.
OK, now, thanks for watching.
I will see you in the next.