WEBVTT 00:01.420 --> 00:01.720 Hello. 00:01.720 --> 00:06.070 In this lecture you will learn about the TAB autocomplete in Linux. 00:06.070 --> 00:07.240 So let's get started. 00:23.700 --> 00:28.320 So when I'm working at the command line, you can easily mistype a command directory name or a file 00:28.320 --> 00:28.590 name. 00:28.590 --> 00:36.480 In fact, the longer directory reference or a file name, the greater chance you have on mistyping it. 00:39.850 --> 00:43.670 This is where our autocomplete can be a lifesaver. 00:43.690 --> 00:50.260 So the autocomplete allows you to start typing a file name or a directory name and then press a tab 00:50.260 --> 00:53.500 key to have the shell complete it for you. 00:53.530 --> 00:58.630 So, for example, in this case, we have LZ, and as you can see, we have my test file, my test file 00:58.660 --> 01:03.460 two and my very, very 219 lengthy file here. 01:03.580 --> 01:10.780 And so when you write like this, LZ, my here. 01:11.720 --> 01:15.950 And you will shove directories that start with my and underscore. 01:16.100 --> 01:19.700 So when you want to copy here for example. 01:21.870 --> 01:27.840 Yeah so copy my vary or my here and as you can see we have several options. 01:27.840 --> 01:32.460 Whenever I click on the top I'm going through these files here. 01:32.460 --> 01:40.650 So after selecting the tab here and press enter your choosing file and here after that we will, for 01:40.650 --> 01:46.350 example, enter in new file, new file. 01:46.350 --> 01:51.810 And here we copied our my very, very lengthy file to new file here. 01:51.810 --> 01:55.860 So ls ls l here? 01:55.860 --> 02:03.270 And as you can see here, the new file is just created in that time here, as you can see here. 02:03.270 --> 02:13.170 134 So in this example, we typed a CP and then press the tab key or we have the actual type, the my 02:13.620 --> 02:19.410 here my and we press the tab key and then shell autocomplete the rest of the file name. 02:19.410 --> 02:26.140 Of course, the destination directory had to be typed, but still Autocomplete saved the command from 02:26.140 --> 02:31.330 a several potential typographical errors. 02:31.330 --> 02:39.130 So the trick to using the autocomplete is to give the shell enough file name characters so it can distinguish 02:39.130 --> 02:41.410 the desired file from the other files. 02:41.410 --> 02:45.220 For example, if the another file name started with, for example. 02:45.220 --> 02:45.790 Really? 02:45.790 --> 02:48.190 Or let's actually try what we have. 02:48.220 --> 02:48.460 Yeah. 02:48.460 --> 02:56.620 If another file name started with test here, pressing the keyword here or like this ls. 02:57.570 --> 02:58.650 Past and present. 02:58.650 --> 03:08.190 The key word here that starts with T here will show us our potential files that we are searching for. 03:08.280 --> 03:12.520 So instead, you would hear a beep if you don't have anything. 03:12.540 --> 03:13.330 To show you. 03:13.350 --> 03:18.720 So if this happens, you can press the tab key again and the shell shows you. 03:18.750 --> 03:21.630 All the file names started with. 03:21.990 --> 03:22.380 Really? 03:22.380 --> 03:28.080 So this feature allows you to see what needs to be typed for. 03:28.170 --> 03:31.350 Tab autocomplete to work properly.