Getting the latest nn group list

nn automatically stores in a file on your root directory the names of
all the groups in nn.  nn accesses this file automatically to advise
you about accessing them when you enter the program.

Sometimes you may want to replace that file with the most current version,
such as when you have a corrupted .newsrc:

> Seems that instead of having read all of the news, I had corrupted my .newsrc
> file.   By erasing it altogether, I got a new one, but with only about 600
> groups instead of 1000+.  How do I go about getting a new full .newsrc?

Answer:

To solve this problem I recommend the following ... remove the current
.newsrc file and run "nn". It will ask you if want to restore from the
backup file, answer "n", and then it will prompt you if you want to
rebuild the newsrc file from scratch, which it would do by picking up
the current active file from the server and generatic the appropriate
.newsrc.