WEBVTT 00:01.440 --> 00:04.680 Okay, now we just, uh, done the first tip. 00:04.720 --> 00:07.320 Okay, let's execute and read ifconfig. 00:07.320 --> 00:09.000 We are able to read the ifconfig. 00:09.160 --> 00:09.560 Okay. 00:10.040 --> 00:15.280 And now it is time to read the Mac address from output. 00:15.320 --> 00:15.880 Okay. 00:15.920 --> 00:17.040 So where is the output. 00:17.120 --> 00:17.920 Let me show you. 00:18.040 --> 00:19.880 This is the output okay. 00:19.920 --> 00:22.120 And this is the Mac address. 00:22.160 --> 00:22.560 Okay. 00:23.480 --> 00:28.560 So how can I capture only the Mac address and read this. 00:28.600 --> 00:29.400 Okay. 00:29.440 --> 00:30.680 There is something. 00:30.720 --> 00:30.920 Okay. 00:30.920 --> 00:38.840 There is one thing, uh, something or one thing that is called regex or regular expression. 00:38.840 --> 00:43.760 You can use it in any programming language, but in Python we are going to use it and you are going 00:43.760 --> 00:45.120 to learn it how to use it. 00:45.240 --> 00:54.480 There is a website called Politics and politics.org. 00:54.520 --> 00:56.400 When you can write in here okay. 00:56.920 --> 01:02.480 And you're going to see something like this, you're, you're not going to see this one and you're going 01:02.480 --> 01:03.640 to see something like this. 01:03.840 --> 01:04.840 Okay. 01:04.880 --> 01:08.330 So here if you add something, anything. 01:08.370 --> 01:08.730 Okay. 01:08.850 --> 01:09.810 Your test here. 01:09.970 --> 01:15.050 Your test string here in this part and your regular expression here. 01:15.370 --> 01:17.290 And the result will be shown here. 01:17.770 --> 01:21.770 And also regular expression cheat sheet also here. 01:22.210 --> 01:24.610 So here we have very good description. 01:24.690 --> 01:30.850 For example if you want to use dot at the beginning or anywhere it is going to match any character okay. 01:30.890 --> 01:33.610 Any character that means all characters. 01:33.850 --> 01:39.850 And if you use alphanumeric, if you want to find alphanumeric, that is something we are going to use 01:39.850 --> 01:40.130 here. 01:40.170 --> 01:41.050 Okay. 01:41.090 --> 01:46.850 That is included from 0 to 9 A to Z and also A to Z and also underscore. 01:47.570 --> 01:51.730 So we are going to use a slash w okay. 01:51.770 --> 01:53.930 This small one not Capital One. 01:54.730 --> 02:01.250 So let's come back here and let's select our ipconfig result okay. 02:01.290 --> 02:03.770 I am going to select everything from here. 02:03.770 --> 02:06.130 I'm going to copy selection. 02:06.130 --> 02:12.130 And then I'm going to go to browser here I'm going to paste that. 02:12.330 --> 02:17.100 So I use control V so now it is pasted. 02:17.420 --> 02:20.580 So here let's hit dot here. 02:22.500 --> 02:24.700 And this is the matched result. 02:24.700 --> 02:26.620 As you see right now it is selected. 02:26.620 --> 02:28.580 Everything okay. 02:28.620 --> 02:29.980 It is not what we want. 02:30.020 --> 02:33.580 So what we want is the Mac address. 02:33.580 --> 02:34.820 Where is the Mac address. 02:35.220 --> 02:36.300 Let's find that. 02:36.940 --> 02:39.140 So either this is the Mac address. 02:39.140 --> 02:42.620 As you see this part is called Mac address okay. 02:42.660 --> 02:44.220 So we have two number. 02:44.620 --> 02:48.420 And then we have this called alphanumeric okay. 02:48.460 --> 02:50.860 So we can use this part okay. 02:50.980 --> 02:59.700 Slash w alphanumeric again alphanumeric alphanumeric alphanumeric alphanumeric and alpha numeric here 02:59.740 --> 03:00.300 okay. 03:00.340 --> 03:04.180 And also we have to use colon as well here okay. 03:04.220 --> 03:07.060 So let's do that here. 03:07.060 --> 03:10.820 For example I am going to select a slash w. 03:10.860 --> 03:14.780 That is something that is looked there okay. 03:14.820 --> 03:22.710 So as you see it is it's selected all the numeric and also all the alpha alpha numeric alphabet and 03:22.710 --> 03:23.830 also numeric. 03:24.110 --> 03:27.070 So it's selected all and everything. 03:27.070 --> 03:28.550 I'm going to use it again. 03:28.950 --> 03:30.390 Slash w. 03:30.390 --> 03:36.230 So right now it is again selected alpha and numeric numbers and alphabet. 03:36.270 --> 03:41.030 So here as you see it is not selected the colon. 03:41.030 --> 03:42.870 So let's use colon here. 03:43.790 --> 03:44.310 Wow. 03:44.310 --> 03:45.790 This time it is better. 03:45.830 --> 03:46.430 Okay. 03:46.470 --> 03:52.870 Right now you see that we selected alphanumeric and we haven't selected the last one maybe. 03:54.310 --> 03:58.790 And that is because the at the end it doesn't have colon okay. 03:58.830 --> 04:00.150 Because of that it is happened. 04:00.190 --> 04:02.190 It doesn't selected that yet. 04:02.230 --> 04:04.590 So what is the solution. 04:05.110 --> 04:05.310 Okay. 04:05.350 --> 04:08.790 We have 123456. 04:08.790 --> 04:16.630 What if I select I use backslash backslash WWW6 time. 04:16.630 --> 04:19.070 So I'm sure it's going to solve the problem. 04:19.110 --> 04:19.350 Okay. 04:19.350 --> 04:21.110 Let's go and do that. 04:21.150 --> 04:23.350 Okay w slash w and then colon. 04:23.470 --> 04:31.600 Slash w w So now you see we have selected these three, four, five and six. 04:31.600 --> 04:33.720 I'm going to select that six times. 04:33.840 --> 04:39.440 Slash w w w w w w. 04:39.440 --> 04:46.000 Now as you see it's selected only only the Mac address okay. 04:46.040 --> 04:49.720 The ether as you see that here right now it is this one. 04:49.720 --> 04:55.760 If it if it has for example alpha alphabet again it's going to select it. 04:55.800 --> 04:56.800 No problem. 04:56.800 --> 05:00.040 So now this is our regular expression. 05:00.040 --> 05:01.760 We are going to use it with Python. 05:01.760 --> 05:11.080 And if someone trying to learn other programming language like Java or even JavaScript, they can use 05:11.120 --> 05:12.400 the same thing. 05:12.400 --> 05:19.480 So right now we provided a regular expression to select only the Mac address from ifconfig result. 05:19.480 --> 05:26.880 And let's go and see how we can use it to extract this from the output. 05:26.920 --> 05:27.320 Okay. 05:27.640 --> 05:31.480 So let's go and do that in the next lecture.