1 00:00:01,030 --> 00:00:01,600 Okay. 2 00:00:01,600 --> 00:00:07,360 So from the previous lectures, we know how to change the Mac address using these three commands by 3 00:00:07,360 --> 00:00:14,020 doing if config lan zero down if config lan zero whether followed by the MAC address that we want to 4 00:00:14,020 --> 00:00:20,620 change our MAC address to and then we do if config lan zero up to enable our interface. 5 00:00:21,460 --> 00:00:27,610 We also learned how to execute system commands from Python using the SAP process module. 6 00:00:27,730 --> 00:00:34,570 So we're going to combine these two things and write a program that will change the Mac address for 7 00:00:34,570 --> 00:00:35,080 us. 8 00:00:35,440 --> 00:00:43,450 So first of all, I'm just going to close this from here and then all we have to do right now is change 9 00:00:43,450 --> 00:00:47,710 if config in here with the commands that we executed here. 10 00:00:48,550 --> 00:00:53,080 So the first command that we want to run is going to be if config. 11 00:00:54,260 --> 00:00:56,690 Land zero down. 12 00:00:57,680 --> 00:01:03,940 Then you can actually do control DX to duplicate the line that you're currently at. 13 00:01:03,950 --> 00:01:06,790 So I'm going to do Control D right here. 14 00:01:06,800 --> 00:01:11,120 And as you can see, I have a new line exactly similar to the previous line. 15 00:01:11,600 --> 00:01:22,460 And in here we're going to do if config line 0hw ether and then input the MAC address and let's set 16 00:01:22,460 --> 00:01:24,560 it this time to zero zero. 17 00:01:25,270 --> 00:01:32,320 One, one, two, two, three, three, four, four, and we'll set it to six, six this time so we 18 00:01:32,320 --> 00:01:34,750 can differentiate it from the previous one. 19 00:01:35,530 --> 00:01:39,850 And finally, I'm going to do Control DX again because I'm lazy. 20 00:01:39,850 --> 00:01:41,870 So a duplicates the line for me. 21 00:01:41,890 --> 00:01:49,270 And the final command is going to be if config lan zero up to enable the interface and that's it. 22 00:01:49,270 --> 00:01:49,900 We're done. 23 00:01:49,930 --> 00:01:51,160 Very, very simple. 24 00:01:51,160 --> 00:01:53,530 So very similar to what we did before. 25 00:01:53,560 --> 00:01:58,990 We're importing this process module first and then we're using the same function, which is the call 26 00:01:58,990 --> 00:02:05,590 function which allows us to run system commands and we're on Linux so we can run any Linux commands. 27 00:02:05,680 --> 00:02:09,270 And we know that these commands allow us to change the Mac address. 28 00:02:09,280 --> 00:02:16,840 We put the interface down first, then we set the MAC address that we want to use by doing if config 29 00:02:16,840 --> 00:02:20,170 lan zero hash table other followed by the mac address. 30 00:02:20,440 --> 00:02:25,150 And then we do if config lan zero up to enable the MAC address. 31 00:02:25,720 --> 00:02:32,260 Now if we execute this script from terminal, the script should change the MAC address for us and we 32 00:02:32,260 --> 00:02:35,020 won't have to run these three commands to do it. 33 00:02:35,680 --> 00:02:39,580 So I can run it by going to run here and then run. 34 00:02:39,580 --> 00:02:41,020 But I actually don't want to do that. 35 00:02:41,020 --> 00:02:46,060 I want to run it from terminal because I actually like running stuff from terminal more because I can 36 00:02:46,060 --> 00:02:52,480 run other commands and so that we can run if config after it and make sure that the MAC address did 37 00:02:52,480 --> 00:02:53,740 actually change. 38 00:02:54,160 --> 00:03:00,460 So I'm going to go to my terminal and I'm going to navigate to where this project is stored. 39 00:03:00,580 --> 00:03:06,970 Now, if we go up here just for a second and hover over here, you can see that this project is stored 40 00:03:06,970 --> 00:03:08,500 in my user home. 41 00:03:08,500 --> 00:03:11,020 PY Charm mac changer. 42 00:03:11,800 --> 00:03:19,210 So I'm going to do see the pie chart projects and by the way you can just press tab as you're typing 43 00:03:19,210 --> 00:03:21,790 a command and it will autocomplete for you. 44 00:03:21,790 --> 00:03:28,720 So all I have to do is type Mac and Tab and as you can see, it automatically auto completes the mac 45 00:03:28,720 --> 00:03:29,410 changer. 46 00:03:30,370 --> 00:03:35,560 Now, if I do, LZ, here to list all the files you can see, I have my mac changer script in here. 47 00:03:36,520 --> 00:03:41,140 And to run this script, as usual, all you have to do is do python mac. 48 00:03:41,140 --> 00:03:44,440 Change your dot py hit enter. 49 00:03:45,790 --> 00:03:47,710 And this didn't show us any errors. 50 00:03:47,710 --> 00:03:48,970 So this is very good. 51 00:03:48,970 --> 00:03:51,370 This means that things did actually work. 52 00:03:51,460 --> 00:03:54,070 And now if we do if config lands zero. 53 00:03:55,950 --> 00:04:04,620 You can see that our Mac address got changed to 001122334466 instead of five five. 54 00:04:04,650 --> 00:04:12,630 So this means that our code in here worked and we managed to execute these three system commands through 55 00:04:12,630 --> 00:04:14,550 our Python script. 56 00:04:15,030 --> 00:04:16,260 Now I know what you're thinking. 57 00:04:16,260 --> 00:04:17,410 This is very simple. 58 00:04:17,430 --> 00:04:20,070 All we're doing is just running system commands. 59 00:04:20,430 --> 00:04:25,710 Doesn't really show the power of Python, but we're still at the very start of the lectures. 60 00:04:25,860 --> 00:04:32,610 I'm actually going to spend a little bit more time on this script to cover a lot of basics about Python 61 00:04:32,610 --> 00:04:33,510 programming. 62 00:04:33,900 --> 00:04:38,730 So in the next lectures, we're going to be building up on this very simple script. 63 00:04:38,730 --> 00:04:46,770 And as we do that, I'm going to teach you conditional statements, variables, regex and more. 64 00:04:46,770 --> 00:04:49,900 And this is the style I'm going to follow throughout the whole course. 65 00:04:49,920 --> 00:04:55,530 We're going to be, first of all, creating a script that does something useful, and then we'll build 66 00:04:55,530 --> 00:04:56,530 up on that. 67 00:04:56,550 --> 00:05:02,400 So this won't be the only script that we create, but we're actually spent some time working and adding 68 00:05:02,400 --> 00:05:09,000 features to this script because as I add features, I want to cover Python basics so that I can teach 69 00:05:09,000 --> 00:05:15,630 you more advanced Python programming in the next sections and build more advanced Python programs.