Dennis Yurichev <dennis_mailing_lists@conus.info> writes:

> 1) How to search for the string in bodies of all messages in specific group?

From the gnus info page:

3.27.2 Searching for Articles
-----------------------------

`M-s'
     Search through all subsequent (raw) articles for a regexp
     (`gnus-summary-search-article-forward').

`M-r'
     Search through all previous (raw) articles for a regexp
     (`gnus-summary-search-article-backward').

`M-S'
     Repeat the previous search forwards
     (`gnus-summary-repeat-search-article-forward').

`M-R'
     Repeat the previous search backwards
     (`gnus-summary-repeat-search-article-backward').


> 2) How to search for the string in bodies of all messages in all 
> groups present in GNUS?

Do not know this one.