One of the most useful features of bash is its ability to autocomplete the name of the command that you are typing. This is as easy as pressing the Tab key.

For example, if you want to run the command nano in order to launch the nano text editor, simply type the following command:

nan

Now press the Tab key. The bash will automatically autocomplete the command and display this:

nano

This can be a real timesaver. If there is more than one possible combination of autocompletion, you will need to press the Tab key twice. This will cause bash to list all the different possibilities.

The bash's autocomplete system