Can anyone please point to some good sample files that helps to learn grep. This is for academic use. It should be a large one so that students could understand its importance
To demonstrate how to find out which port http uses, or
To find out what service you can expect to find on port 80
You might want to use books from Project Gutenberg. They are in the public domain, are quite large (you can
Otherwise, Wikipedia gives a bunch of public domain resources which might be available in plain text format.