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Hello.

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In this lecture you will learn about the TAB autocomplete in Linux.

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So let's get started.

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So when I'm working at the command line, you can easily mistype a command directory name or a file

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name.

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In fact, the longer directory reference or a file name, the greater chance you have on mistyping it.

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This is where our autocomplete can be a lifesaver.

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So the autocomplete allows you to start typing a file name or a directory name and then press a tab

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key to have the shell complete it for you.

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So, for example, in this case, we have LZ, and as you can see, we have my test file, my test file

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two and my very, very 219 lengthy file here.

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And so when you write like this, LZ, my here.

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And you will shove directories that start with my and underscore.

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So when you want to copy here for example.

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Yeah so copy my vary or my here and as you can see we have several options.

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Whenever I click on the top I'm going through these files here.

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So after selecting the tab here and press enter your choosing file and here after that we will, for

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example, enter in new file, new file.

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And here we copied our my very, very lengthy file to new file here.

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So ls ls l here?

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And as you can see here, the new file is just created in that time here, as you can see here.

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134 So in this example, we typed a CP and then press the tab key or we have the actual type, the my

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here my and we press the tab key and then shell autocomplete the rest of the file name.

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Of course, the destination directory had to be typed, but still Autocomplete saved the command from

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a several potential typographical errors.

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So the trick to using the autocomplete is to give the shell enough file name characters so it can distinguish

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the desired file from the other files.

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For example, if the another file name started with, for example.

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Really?

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Or let's actually try what we have.

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Yeah.

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If another file name started with test here, pressing the keyword here or like this ls.

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Past and present.

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The key word here that starts with T here will show us our potential files that we are searching for.

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So instead, you would hear a beep if you don't have anything.

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To show you.

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So if this happens, you can press the tab key again and the shell shows you.

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All the file names started with.

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Really?

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So this feature allows you to see what needs to be typed for.

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Tab autocomplete to work properly.