What is a one-sentence summary of the following article?
sudo apt-get update (then hit Enter) The password is that one, which you're using in the Login Screen. Password does not show up in the terminal when you type it. Just type your password and hit Enter. If your password was entered correctly, the action will continue. sudo apt-get install alien (then hit Enter) The password is that one, which you're using in the Login Screen. Password does not show up in the terminal when you type it. Just type your password and hit Enter. If it asks you do you want to continue, type 'Y' to your Terminal and then hit Enter.

Summary:
Type the following command to the Terminal (press Ctrl+Alt+T on your keyboard) or use copy/paste method to update your system first: When it asks you for password, don't be confused. To install Alien application to your Ubuntu operating system, you need to type following command to the Terminal (press Ctrl+Alt+T on your keyboard) or use copy/paste method: When it asks you for password, don't be confused.