xenial (1) nngrab.1.gz

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