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Now that we created our virtual machines,
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it's a really good idea to take snapshots of them.
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A snapshot allows you to store the state
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of the current virtual machine.
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So allows you to go back in time
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or go forward to a certain state after you go back.
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So you can think of it as bookmarks.
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For example, now we can take snapshots
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of our fresh installation of the operating systems.
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And in the future if we update or configure something
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or break something, you can literally just go back
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to the fresh install or go back to factory settings
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if you want to call it.
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Then if you did something there
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and then you wanted to go back to your updated system.
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Then you can go back to the updated system as well.
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So it can literally take a snapshot whenever you want
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to store the state of the machine.
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And then you can go back and forth between these states.
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Now I'll show you how to do that.
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I have Kali-Linux right here.
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The one that we installed.
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And it's very easy to create a snapshot for it.
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All we have to do is just go on the snapshots here
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and click on the camera icon.
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Then it's gonna ask you to call the snapshot something.
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So I'm just going to call it Fresh Install
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and I'm just gonna give it the description
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saying it's a fresh snapshot with no updates.
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It's always a good idea to give a good name
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and good description so that in the future,
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you can actually remember what's the snapshot stand for.
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So now that I'm done, I'm just gonna click on okay.
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And now you can see that we have the current state.
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So whatever you do in here.
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You can update.
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You can install programs.
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You can install libraries.
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And then if you break something or you ever want to go back
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to the fresh install, you can just come back
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and click on the fresh install and restore.
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So let's see now.
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I'm just gonna go back to the details as normal
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and then we're gonna start our virtual machine.
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I'll just show you an example now.
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So let me just create a new directory in here.
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So let's imagine that you actually updated the system.
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Now in the future, we're gonna talk
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about updating the system.
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And I'm gonna tell you that when you update,
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there's a good chance some libraries
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some programs will not be as up to date
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as the libraries that will be installed.
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And then these programs might start giving you issues.
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Now if you have the issues, you can put them into discussion
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and I'll help you with them.
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But some cases, I'll tell you that you'll need to go back or
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downgrade to the older version without the update.
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So all you'll have to do is just get back
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to the fresh installation to your fresh snapshot.
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So now just created the new file just to show you
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that once you actually go back, everything will go back
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to the way it was before the changes that you made.
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So I'm just gonna turn off Kali.
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And now if we go back to the snapshots,
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you'll see that we have our current state.
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This state has been changed so it's the changed state.
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Now let's say that you updated
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and the update was successful.
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So nothing was broken and you are happy with it.
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So what you should do is that you should just come in and
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click on the camera icon again to create another snapshot.
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And we're gonna call this one Updated System.
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And then you can just put the date if you want to.
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And then I'm just going to put the description
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updated with no problems.
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So I'm gonna click okay.
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And you can see that we have two snapshots.
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We have the first one, which is our fresh install.
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And then we updated our system
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and we have an updated snapshot of an updated system.
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So now let's say that after you updated
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and you thought that everything was okay,
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you are using the machine and you have problems.
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So you wanted to go back to the fresh installation.
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All you have to do is just click on the fresh install
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and you can see the restore icon right here.
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Just click that.
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And now it restored me to the fresh installation.
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So now if I start the Kali machine,
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you will see the new directory
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that we created will disappear.
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Now as you can see, we are back to where we were
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without the new directory, without anything.
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So we are actually back to the fresh installation of Kali
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to when we actually took the snapshot.
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So now I'm gonna show you another example.
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So let's say you went back in time
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and you went back to your fresh installation.
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And then for some reason,
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you wanted to go back to your updated state
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to see if you can fix the issue.
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If I suggested the solution
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or if you read the solution online
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and you want to go back to fix the issue
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that you had after the update or for any other reason.
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Maybe you just wanted to go back to a different state.
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It wasn't an updated state.
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I'm just giving an example with the update.
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So if you want to go back to a future state,
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you can still do that.
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So all you have to do is just again.
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Click on the updated. Click on the restore.
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And we don't want to create a new snapshot
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from the current state.
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Because the current state is the updated state.
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So we're gonna restore this.
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Start the machine and you'll see
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that we'll be back to the updated state
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to where we had the new directory created.
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So we're actually gonna go back in the future now.
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And as you can see now, we have our test directory.
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So we're back to the state where we updated the system.
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So again.
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As you can see, the snapshots can be really useful.
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They can allow you to store bookmarks
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or states of the operating system.
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So you can actually have different configurations
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and you can switch between them as you want.
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