1 1 00:00:00,850 --> 00:00:03,400 Now that we created our virtual machines, 2 2 00:00:03,400 --> 00:00:07,160 it's a really good idea to take snapshots of them. 3 3 00:00:07,160 --> 00:00:09,770 A snapshot allows you to store the state 4 4 00:00:09,770 --> 00:00:11,950 of the current virtual machine. 5 5 00:00:11,950 --> 00:00:14,160 So allows you to go back in time 6 6 00:00:14,160 --> 00:00:18,050 or go forward to a certain state after you go back. 7 7 00:00:18,050 --> 00:00:20,170 So you can think of it as bookmarks. 8 8 00:00:20,170 --> 00:00:22,130 For example, now we can take snapshots 9 9 00:00:22,130 --> 00:00:25,310 of our fresh installation of the operating systems. 10 10 00:00:25,310 --> 00:00:28,053 And in the future if we update or configure something 11 11 00:00:28,053 --> 00:00:31,510 or break something, you can literally just go back 12 12 00:00:31,510 --> 00:00:34,870 to the fresh install or go back to factory settings 13 13 00:00:34,870 --> 00:00:36,430 if you want to call it. 14 14 00:00:36,430 --> 00:00:38,410 Then if you did something there 15 15 00:00:38,410 --> 00:00:41,670 and then you wanted to go back to your updated system. 16 16 00:00:41,670 --> 00:00:44,000 Then you can go back to the updated system as well. 17 17 00:00:44,000 --> 00:00:46,350 So it can literally take a snapshot whenever you want 18 18 00:00:46,350 --> 00:00:49,070 to store the state of the machine. 19 19 00:00:49,070 --> 00:00:51,963 And then you can go back and forth between these states. 20 20 00:00:53,020 --> 00:00:54,480 Now I'll show you how to do that. 21 21 00:00:54,480 --> 00:00:56,510 I have Kali-Linux right here. 22 22 00:00:56,510 --> 00:00:58,170 The one that we installed. 23 23 00:00:58,170 --> 00:01:00,230 And it's very easy to create a snapshot for it. 24 24 00:01:00,230 --> 00:01:03,370 All we have to do is just go on the snapshots here 25 25 00:01:03,370 --> 00:01:06,363 and click on the camera icon. 26 26 00:01:08,210 --> 00:01:10,600 Then it's gonna ask you to call the snapshot something. 27 27 00:01:10,600 --> 00:01:13,120 So I'm just going to call it Fresh Install 28 28 00:01:15,080 --> 00:01:16,520 and I'm just gonna give it the description 29 29 00:01:16,520 --> 00:01:19,820 saying it's a fresh snapshot with no updates. 30 30 00:01:19,820 --> 00:01:21,630 It's always a good idea to give a good name 31 31 00:01:21,630 --> 00:01:23,470 and good description so that in the future, 32 32 00:01:23,470 --> 00:01:27,240 you can actually remember what's the snapshot stand for. 33 33 00:01:27,240 --> 00:01:29,790 So now that I'm done, I'm just gonna click on okay. 34 34 00:01:31,230 --> 00:01:34,280 And now you can see that we have the current state. 35 35 00:01:34,280 --> 00:01:36,710 So whatever you do in here. 36 36 00:01:36,710 --> 00:01:37,690 You can update. 37 37 00:01:37,690 --> 00:01:38,880 You can install programs. 38 38 00:01:38,880 --> 00:01:40,330 You can install libraries. 39 39 00:01:40,330 --> 00:01:43,010 And then if you break something or you ever want to go back 40 40 00:01:43,010 --> 00:01:45,130 to the fresh install, you can just come back 41 41 00:01:45,130 --> 00:01:48,180 and click on the fresh install and restore. 42 42 00:01:48,180 --> 00:01:49,160 So let's see now. 43 43 00:01:49,160 --> 00:01:51,180 I'm just gonna go back to the details as normal 44 44 00:01:51,180 --> 00:01:54,010 and then we're gonna start our virtual machine. 45 45 00:01:54,010 --> 00:01:55,710 I'll just show you an example now. 46 46 00:02:02,530 --> 00:02:04,830 So let me just create a new directory in here. 47 47 00:02:07,020 --> 00:02:09,760 So let's imagine that you actually updated the system. 48 48 00:02:09,760 --> 00:02:11,010 Now in the future, we're gonna talk 49 49 00:02:11,010 --> 00:02:12,470 about updating the system. 50 50 00:02:12,470 --> 00:02:14,990 And I'm gonna tell you that when you update, 51 51 00:02:14,990 --> 00:02:16,980 there's a good chance some libraries 52 52 00:02:16,980 --> 00:02:19,230 some programs will not be as up to date 53 53 00:02:19,230 --> 00:02:21,220 as the libraries that will be installed. 54 54 00:02:21,220 --> 00:02:24,250 And then these programs might start giving you issues. 55 55 00:02:24,250 --> 00:02:26,830 Now if you have the issues, you can put them into discussion 56 56 00:02:26,830 --> 00:02:28,080 and I'll help you with them. 57 57 00:02:28,080 --> 00:02:31,260 But some cases, I'll tell you that you'll need to go back or 58 58 00:02:31,260 --> 00:02:33,980 downgrade to the older version without the update. 59 59 00:02:33,980 --> 00:02:35,710 So all you'll have to do is just get back 60 60 00:02:35,710 --> 00:02:39,170 to the fresh installation to your fresh snapshot. 61 61 00:02:39,170 --> 00:02:41,860 So now just created the new file just to show you 62 62 00:02:41,860 --> 00:02:44,410 that once you actually go back, everything will go back 63 63 00:02:44,410 --> 00:02:48,050 to the way it was before the changes that you made. 64 64 00:02:48,050 --> 00:02:49,650 So I'm just gonna turn off Kali. 65 65 00:02:53,860 --> 00:02:55,903 And now if we go back to the snapshots, 66 66 00:02:57,670 --> 00:02:59,700 you'll see that we have our current state. 67 67 00:02:59,700 --> 00:03:02,710 This state has been changed so it's the changed state. 68 68 00:03:02,710 --> 00:03:04,030 Now let's say that you updated 69 69 00:03:04,030 --> 00:03:05,380 and the update was successful. 70 70 00:03:05,380 --> 00:03:08,010 So nothing was broken and you are happy with it. 71 71 00:03:08,010 --> 00:03:10,700 So what you should do is that you should just come in and 72 72 00:03:10,700 --> 00:03:14,400 click on the camera icon again to create another snapshot. 73 73 00:03:14,400 --> 00:03:17,113 And we're gonna call this one Updated System. 74 74 00:03:18,160 --> 00:03:21,060 And then you can just put the date if you want to. 75 75 00:03:21,060 --> 00:03:23,070 And then I'm just going to put the description 76 76 00:03:23,070 --> 00:03:24,623 updated with no problems. 77 77 00:03:26,070 --> 00:03:27,513 So I'm gonna click okay. 78 78 00:03:29,510 --> 00:03:31,390 And you can see that we have two snapshots. 79 79 00:03:31,390 --> 00:03:34,030 We have the first one, which is our fresh install. 80 80 00:03:34,030 --> 00:03:35,660 And then we updated our system 81 81 00:03:35,660 --> 00:03:39,260 and we have an updated snapshot of an updated system. 82 82 00:03:39,260 --> 00:03:41,910 So now let's say that after you updated 83 83 00:03:41,910 --> 00:03:43,430 and you thought that everything was okay, 84 84 00:03:43,430 --> 00:03:45,620 you are using the machine and you have problems. 85 85 00:03:45,620 --> 00:03:48,060 So you wanted to go back to the fresh installation. 86 86 00:03:48,060 --> 00:03:51,220 All you have to do is just click on the fresh install 87 87 00:03:51,220 --> 00:03:54,150 and you can see the restore icon right here. 88 88 00:03:54,150 --> 00:03:55,123 Just click that. 89 89 00:03:55,990 --> 00:03:59,270 And now it restored me to the fresh installation. 90 90 00:03:59,270 --> 00:04:01,800 So now if I start the Kali machine, 91 91 00:04:01,800 --> 00:04:03,170 you will see the new directory 92 92 00:04:03,170 --> 00:04:05,173 that we created will disappear. 93 93 00:04:09,210 --> 00:04:11,440 Now as you can see, we are back to where we were 94 94 00:04:11,440 --> 00:04:13,550 without the new directory, without anything. 95 95 00:04:13,550 --> 00:04:17,490 So we are actually back to the fresh installation of Kali 96 96 00:04:17,490 --> 00:04:20,663 to when we actually took the snapshot. 97 97 00:04:21,750 --> 00:04:23,580 So now I'm gonna show you another example. 98 98 00:04:23,580 --> 00:04:25,610 So let's say you went back in time 99 99 00:04:25,610 --> 00:04:27,550 and you went back to your fresh installation. 100 100 00:04:27,550 --> 00:04:30,290 And then for some reason, 101 101 00:04:30,290 --> 00:04:32,360 you wanted to go back to your updated state 102 102 00:04:32,360 --> 00:04:33,630 to see if you can fix the issue. 103 103 00:04:33,630 --> 00:04:34,960 If I suggested the solution 104 104 00:04:34,960 --> 00:04:36,510 or if you read the solution online 105 105 00:04:36,510 --> 00:04:38,130 and you want to go back to fix the issue 106 106 00:04:38,130 --> 00:04:40,690 that you had after the update or for any other reason. 107 107 00:04:40,690 --> 00:04:43,390 Maybe you just wanted to go back to a different state. 108 108 00:04:43,390 --> 00:04:45,060 It wasn't an updated state. 109 109 00:04:45,060 --> 00:04:47,210 I'm just giving an example with the update. 110 110 00:04:47,210 --> 00:04:49,110 So if you want to go back to a future state, 111 111 00:04:49,110 --> 00:04:50,490 you can still do that. 112 112 00:04:50,490 --> 00:04:51,910 So all you have to do is just again. 113 113 00:04:51,910 --> 00:04:55,263 Click on the updated. Click on the restore. 114 114 00:04:56,140 --> 00:04:58,100 And we don't want to create a new snapshot 115 115 00:04:58,100 --> 00:04:59,050 from the current state. 116 116 00:04:59,050 --> 00:05:01,730 Because the current state is the updated state. 117 117 00:05:01,730 --> 00:05:03,663 So we're gonna restore this. 118 118 00:05:05,700 --> 00:05:07,420 Start the machine and you'll see 119 119 00:05:07,420 --> 00:05:09,810 that we'll be back to the updated state 120 120 00:05:09,810 --> 00:05:12,250 to where we had the new directory created. 121 121 00:05:12,250 --> 00:05:14,750 So we're actually gonna go back in the future now. 122 122 00:05:16,900 --> 00:05:19,440 And as you can see now, we have our test directory. 123 123 00:05:19,440 --> 00:05:23,043 So we're back to the state where we updated the system. 124 124 00:05:23,960 --> 00:05:24,793 So again. 125 125 00:05:24,793 --> 00:05:27,070 As you can see, the snapshots can be really useful. 126 126 00:05:27,070 --> 00:05:29,360 They can allow you to store bookmarks 127 127 00:05:29,360 --> 00:05:31,230 or states of the operating system. 128 128 00:05:31,230 --> 00:05:33,580 So you can actually have different configurations 129 129 00:05:33,580 --> 00:05:35,953 and you can switch between them as you want.