Someone bets you that, without using a dictionary, you can’t fi nd more than 5 English words that begin with the letters “book”. You are, however, allowed a single Unix command. What command should...

Someone bets you that, without using a dictionary, you can’t fi nd more than 5 English words that begin with the letters “book”. You are, however, allowed a single Unix command. What command should you use?

What is a Unix fi le? What are the three main types of fi les? Describe each type.