Select specific line numbers

Question

I have a file that contains 50,000 lines of floating values. I need to select only data every 100 rows. Is there any command in awk programming?

Thank you very much in advance.

Answer 1

To print lines numbered 100, 200, 300 ... you can do:

awk 'NR%100==0' inputfile 

Take a look

Answer 2

Alternative sed solution:

 sed -n '100~100p' file 

More generally, the expression A~Kp means printing every line of Kth starting at line A.