NAME¶
nngrab - news retrieval by keyword (nn)
SYNOPSIS¶
nngrab [ -
c ]
keyword
DESCRIPTION¶
nngrab invokes
nn on all USENET articles whose subject (or
keyword) field(s) contain an instance of
keyword.
nngrab is a
fast equivalent for:
nn -mxX -s/
keyword all
For example,
nngrab tesla
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
example,
nngrab "n.*tesla"
The range of search includes all newsgroups on the system, including ones which
are unsubscribed.
FILES¶
$db/subjects subject database
SEE ALSO¶
nn(1),
nnspew(8),
egrep(1)
NOTES¶
nngrab can be much faster than the equivalent command shown above,
if the tertiary news subject database generated by the
nnspew(8) daemon
exists. To enable the faster operation,
nnspew must be executed
regularly by cron.
nngrab uses
egrep(1) to scan the subject database, so if you are
not running
fast egrep (GNU-style) this is all for naught.
nngrab will use a subject database generated by
nnspew independent
of its age. Thus, if you stop running
nnspew, remember to remove the
subjects file as well.
BUGS¶
Under version 6.4 onwards, search of the "Keywords:" field is not
supported.
Search on name is not possible either.
AUTHOR¶
James A. Woods, NASA Ames Research Center
E-mail: jaw@ames.arc.nasa.gov