All right, now for the five system, what I want you to learn some of your comments, I would not go
too deep into it, actually.
So we have that the argument, the you command the NSA bulk the list block and we have the amount command,
OK, which is like this.
OK, so let's start with the first three.
Then we will go to the OK.
Now, here we have that option.
OK, so here is if you can see, man, the D.F., you can see to report filesystem this Kucik or disk
space, use it.
OK, so actually this is used to to show all the information about the disk you have or the file system
itself.
So for example, you, you would reveal the size, how much it used, how much it is available and use
in percent and where it is mounted.
OK, so for example for here we have the X VDARE one and the used is one.
Gigha, as you can see, one point two from eight Gigha, OK.
And the available is six point six and it is used only 15 percent.
OK, and you can see where it is mounted.
It is mounted in that which means that everything.
So if I go there like this.
You can see that all of that all of these files or directories are mounted there, or are there existed
on the XviD, a BI system or this volubility?
What if I want to see the size or of this specific file or directly OK, or all the files inside this
demitry, we would use the disk, you or the you, the disk utilization.
So for example, you can see that we have this in it are the image, that image, whatever.
OK, so do you dash.
And by the way, if you notice that I type that dash here and that the options as well, that means
that the human readable.
So as you can see, it is as you can see, the size is in megabyte, in gigabyte.
Instead of typing it as a.
OK.
Because if you saw like this, let's return back here.
So if I typed the dash at all without the search, I mean, this time you can see that the.
You did.
Yeah.
Here that you this is four hundred fifty seven megabytes.
But here is a very long number and you don't need to divide by byte or by terabyte.
And this is not not readable so much like that.
OK, so that's why we use the dash at auction.
So for you again, let's return to our example.
Let's return to the deal.
OK, so the new disk utilization Desh Edge or they're in it are the.
Images like this, and if I click on it, you can see that its size is zero.
OK, well, maybe I should use another one.
It's just this lenience.
This is zero as well.
Yeah, OK, whatever.
Let's go to the here for the file to the you point to OK like this and you can see that it is in for
Kilobyte so its size is four kilobyte.
All right.
So again, without that option like this, you can see that it is for only.
So actually this is not really.
Now what if I want for example, it's clear the screen, let's cd that OK?
Yeah.
By the way, this is something we didn't talk about actually, which is the DOT directory and the directory
by the way, the directory which means the current data.
I am in the dot dot which means the parent directory because if you noticed, if you type this command
and it means all files.
So if you can see here, you can see that we have these two directories, the one the DOT, which means
the current directory and the the the dot means the parent tree of the current directory.
So if I type the B W.D., the Brint working directory comment, you can see that it is not from the
root the home open-top.
OK, so currently I am inside the Ubuntu directory.
So the dot here means the appointed entity, which is the current directory I am in that there and there
is the home directory.
All right.
As you can see, the owner and the group is route, which means the home Darity, which is something
inside the or for the road user.
Right.
So if I type CD dot to go to the Berent and these are called relative bef actually they are toolbars
absolute back and relax Beth the absolute best.
You put the bad like this, just copy and paste and with the absolute best starting from the root directory.
All right.
Which is in my case here.
But the relative which means that from where I am so that mean, this means that I am using a relative.
Beth OK, so which means the parent type data which means I am in Ubuntu, I will go to the home.
So if I click here and I type.
But again you can see currently I am in that home.
So if I type and as you can see that we have three directory, only the current directory and in my
case here it will be the home directory.
As you can see, the owner is what the group is rude as well.
But the Ubuntu directory here is for the window user.
Alright, alright.
Now what if I want to see the size of this Daltry?
I will use the disk utilization command as well on Ubuntu, but you can see that it show us everything
actually.
Yeah.
Please ignore about this.
Remember when we wanted to not be readable or executable anyway.
It's no big deal.
So you can see that it shows, it shows us everything actually show us the whole size for the whole
directory which is 64 kilowatt.
Now what if I don't need to show all of these options and I want to show only that Ubuntu the size for
the open today?
Actually, as simple as that you will.
But the Dash s option, which is like this X now s means samurai's.
So Samurai's only that directory.
I want it so which is Ubuntu in my case.
So you can see that it was like this right now.
Please ignore about this.
So actually let's remove it or we can change the permission for it, but for now let's remove it.
And it is good exercise for now.
So actually it is a file which means I don't need to provide the best for it.
So if I type it like this, actually I need to remove the text itself.
So if it is a directory, which means that I would dash and yeah, as you can see, if you can see it
is permission denied.
I need to put it out.
If they just didn't want I need to go the studio and it will be removed.
OK, so if I take the commands again, which is the due Desh X as well, you can see that now it is
only summarised for the Ubuntu user.
And as you can see the size is sixty kilobyte now, not sixty four.
As you can see, it has been decreased all right, now, finally, the last option or the last command
we have, which is the mount, as you can see now, actually, it's, what, nine mount to see the would
be for it.
So this is actually to mount a fire system.
So the syntax is like this mount then.
But the options, you want to see the type.
But Dashi and all of that is actually here documented will actually look and see if only that actually
is given.
For example, you can put Mount Dash there or dash, dash, target, whatever.
Right.
And actually this is something used if you want to attach or mount volumes, external volumes, for
example, or you inserted external volumes and you want to mount them here after you add them, for
example, on the reverse.
So, for example, in the US, there is something called Ebb's Elastic Storage, and this is something
to attach another or extra volumes, not the root volumes.
And you want to to mount it when actually I will not go into details into the mount option because they
will give you all the options or all the commands you just copy and paste in there right now in that
case, either as Google Cloud or whatever, OK, they would provide you with all the things you want
so that the mountain just keep in your mind that we will use it for mounting the file system or the
volumes we want.
Just that.
OK.
Now remember remember the format, the syntax, the options.
Just the manual depends on what you need.
OK, I will not talk about it in detail.
All right.
Thanks for watching.
See you in the next picture.