nano Search

nano provides a search function for you on a large file.

Lesson 8 | Quiz

If you want to search for a text string use ^W.  Then you will be able to enter the text string you want to search for.  In the example, virtual is the text string.

Once you do the seach and find the first instance, nano will remember the text string and allow you to search again without entering the same string.  Just do ^W and it will come up with the text string you used.