You want to use less to display the contents of the fi le list, which contains many lines of text. Along with the text, you also want to see line numbers. However, there are no line numbers within the...

You want to use less to display the contents of the fi le list, which contains many lines of text. Along with the text, you also want to see line numbers. However, there are no line numbers within the text, and you do not want to change the original fi le in any way. How would you do this using nl and less? How would you do it using only less? Is there any advantage to using nl?