nngrab - news retrieval by keyword (nn)
on all USENET articles whose subject (or
keyword) field(s) contain an instance of keyword
fast equivalent for:
nn -mxX -s/ keyword
will retrieve items concerning Nikola Tesla.
Keyword case is ignored unless - c
is specified, and the keyword
can be a regular expressions (escaped to avoid conflicts with the shell). For
The range of search includes all newsgroups on the system, including ones which
$db/subjects subject database
nn(1), nnspew(8), egrep(1)
nngrab can be
much faster than the equivalent command shown above,
if the tertiary news subject database generated by the nnspew
exists. To enable the faster operation, nnspew
must be executed
regularly by cron.
(1) to scan the subject database, so if you are
not running fast
egrep (GNU-style) this is all for naught.
will use a subject database generated by nnspew
of its age. Thus, if you stop running nnspew
, remember to remove the
subjects file as well.
Under version 6.4 onwards, search of the "Keywords:" field is not
Search on name is not possible either.
James A. Woods, NASA Ames Research Center