How to count lines in a document?

Question

I have lines like these, and I want to know how many lines I actually have...

09:16:39 AM  all    2.00    0.00    4.00    0.00    0.00    0.00    0.00    0.0         


        

Answer 1

Use nl like this:

nl filename

From man nl:

Write each FILE to standard output, with line numbers added. With no FILE, or when FILE is -, read standard input.