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

Or count all lines in subdirectories with a file name pattern (e.g. logfiles with timestamps in the file name):

wc -l ./**/*_SuccessLog.csv