WEBVTT 00:09.210 --> 00:15.630 Harder in this listen we're going to learn about the various operators with the help of which we can 00:15.900 --> 00:17.180 make fun. 00:17.280 --> 00:25.750 OK so what are these operators are K-Doe Brits are an operator and an operator or operator semicolon 00:25.860 --> 00:30.180 operator and not operator or negation operator. 00:30.270 --> 00:36.970 By combining these operate those with the help of commands you will get a different output. 00:37.020 --> 00:40.510 I mean to see if you can make fun. 00:40.620 --> 00:41.000 OK. 00:41.070 --> 00:45.800 So let's see how we can make fun with the of these operators. 00:46.280 --> 00:53.460 OK the first operator is a boss an operator and it is denoted by the symbol on your keyboard. 00:53.600 --> 00:54.090 OK. 00:54.290 --> 00:57.730 And when you use this operator are there. 00:58.020 --> 00:59.610 Come on then. 00:59.730 --> 01:01.200 It will that come on. 01:01.230 --> 01:02.430 And the background. 01:02.530 --> 01:04.650 OK so let's see how to use it. 01:05.100 --> 01:09.940 OK let's create a folder the OK. 01:10.110 --> 01:19.210 And how to use this symbol with this command is just put in these are prepared like this and hit enter. 01:19.510 --> 01:24.510 OK and here you can see it shows here 1 and 1 6 0. 01:24.510 --> 01:31.000 This is the process id that means our process of creating the folder is running at the background. 01:31.020 --> 01:32.220 And let's see. 01:32.610 --> 01:35.730 And here you can see the folder is created. 01:35.940 --> 01:36.500 OK. 01:36.780 --> 01:38.910 And here it displays the message. 01:38.910 --> 01:39.460 Done. 01:39.540 --> 01:41.610 That means the process is completed. 01:41.720 --> 01:42.150 OK. 01:42.210 --> 01:50.790 In this way you can use this as an operator to learn any common at the background to get the next operator 01:50.790 --> 01:52.600 is an operator OK. 01:52.770 --> 01:56.690 The operator works like an IF statement. 01:56.740 --> 01:57.520 OK. 01:57.780 --> 02:01.000 First of all let's see how to use the and operator. 02:01.140 --> 02:03.000 Let's try to create. 02:03.330 --> 02:06.090 Ok what a worker directly. 02:06.110 --> 02:07.680 The folder is already there. 02:07.800 --> 02:13.440 So let's try to create the folder here like this. 02:13.440 --> 02:22.590 You need to grow at the and operator and then see the big deal and head Center says that cannot create 02:22.590 --> 02:25.150 directory prie file exists. 02:25.230 --> 02:27.890 That means that directory is already there. 02:28.050 --> 02:33.720 That's why it unable to create the directory but do good an operator. 02:33.720 --> 02:40.770 The second command that is CD changing directory command is not executed because an operator walks in 02:40.770 --> 02:47.960 such a way that the second command get executed only after the successful execution of command. 02:48.240 --> 02:49.100 OK. 02:49.450 --> 02:49.830 OK. 02:49.860 --> 02:58.340 Let's remove the directory and execute the same command again with the help of an operator. 02:58.470 --> 03:04.390 And here you can see the command is executed and we are inside the directory. 03:04.530 --> 03:09.880 OK here you can see the predicted not contains any file or folder. 03:10.110 --> 03:14.440 OK in this way you can use an operator. 03:14.910 --> 03:20.560 The next stop order is or operator the operator acts like statement. 03:20.700 --> 03:21.300 OK. 03:21.450 --> 03:29.240 So let's see how you use it just replace this and Vic or. 03:29.710 --> 03:30.000 OK. 03:30.000 --> 03:32.550 Use the pipe symbols. 03:33.030 --> 03:34.190 Let's see what happens. 03:34.350 --> 03:34.900 OK. 03:35.010 --> 03:37.220 Here peafowl is already present. 03:37.430 --> 03:37.790 OK. 03:37.800 --> 03:40.580 And we try to execute it. 03:41.300 --> 03:47.440 OK here you can see it sends M K D that can not create directly be filed exist. 03:47.670 --> 03:53.220 But here you can see under the Fosco one fails but the second Come on get executed. 03:53.220 --> 03:56.780 That means here you can see we are inside the P directory. 03:56.960 --> 03:57.500 OK. 03:57.580 --> 04:01.130 Now you can understand how all our operator works. 04:01.140 --> 04:01.610 OK. 04:01.770 --> 04:06.090 If the first command fails then the second command executed. 04:06.090 --> 04:10.970 In case of our OPERATOR OK let's try to create another folder. 04:11.550 --> 04:22.770 First of all get to the home directory and you trying to create for is the and here you can see there's 04:22.830 --> 04:24.110 directory's creator. 04:24.150 --> 04:32.060 But the second command is not executed that means or operate or works only if the first command fails. 04:32.130 --> 04:32.770 OK. 04:32.980 --> 04:41.410 This way you can use the OR operator the next operator is comm OPERATOR OK the comma operator and the 04:41.410 --> 04:47.270 use of comma operator is to execute more than one come on at the same time. 04:47.360 --> 04:48.010 OK. 04:48.250 --> 04:50.030 Like this suppose. 04:50.130 --> 04:51.470 Going to see there are good read. 04:51.510 --> 04:54.190 This began as an hour to remove them. 04:54.190 --> 04:59.450 So let's issue the on really be cynical. 04:59.830 --> 05:04.570 Our reviewer is OK with the help of the semi colon. 05:04.570 --> 05:09.220 You can separate various commands and exclude them at one time. 05:09.250 --> 05:09.720 OK. 05:09.770 --> 05:12.910 Let's enter here Kelsey. 05:13.270 --> 05:17.830 Allison Vienne is directory's get removed from here. 05:17.830 --> 05:24.670 Now the final operator that I would like to show you is the not operator or negation operator the not 05:24.670 --> 05:28.190 operator acts like except statement in programming. 05:28.210 --> 05:30.940 OK so let's see how it works. 05:30.940 --> 05:32.940 First lesson here Kelsey. 05:33.160 --> 05:36.100 There are two files with the extension. 05:36.130 --> 05:43.180 The XTi are present one file with the one file with a statement one file with Doc and one file with 05:43.270 --> 05:44.210 excellence. 05:44.330 --> 05:46.690 OK all these files are different. 05:46.690 --> 05:53.880 OK so what if I want to do the text file as it is and remove the remaining files. 05:54.190 --> 05:57.350 Ok so far these just come on like this. 05:57.400 --> 06:01.770 The not OPERATOR OK then. 06:01.820 --> 06:10.810 Inside this practice put store dot 60 means it is going to leave all the files which are hiring. 06:10.840 --> 06:14.370 Got the extension and remove the remaining files. 06:14.400 --> 06:17.400 Ok so let's hit enter. 06:17.890 --> 06:20.130 OK let's see the result at last. 06:20.140 --> 06:27.220 And here you can see all the files except the extensions are removed from the current directory. 06:27.540 --> 06:37.000 OK in this way you can use the person not karma and or operator and make fun with them or get.