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NNSPEW(8)		    System Manager's Manual		     NNSPEW(8)

NAME
       nnspew -	subject	database manager (nn)

SYNOPSIS
       nnspew

DESCRIPTION
       nnspew builds a sorted database of all available	subjects in the	nn ar-
       ticle database for fast access via the nngrab utility.

       nnspew  should  be activated regularly to rebuild the subject database,
       e.g. by cron.  For example:
	  2 6,9,12,15,18,21 * *	*  root	/bin/nice /usr/lib/nn/nnspew

       Cross posted articles are only represented in the  database  once,  and
       identical  subjects  in each group are merged into one to use a minimum
       of disk space.  This saves about	50% of the disk	 space	otherwise  re-
       quired.

FILES
       $db/subjects   subject database

SEE ALSO
       nn(1), nngrab(1), egrep(1)

NOTES
       nngrap will use the subject database generated by nnspew	independent of
       its age.	 Thus, if you stop running nnspew, remember to remove the sub-
       jects file as well.

BUGS
       nnmaster	 should	automatically append new articles to the subject data-
       base to keep it up-to-date, and thus require less  frequent  rebuilding
       using nnspew.

AUTHOR
       James A.	Woods, NASA Ames Research Center
       E-mail: jaw@ames.arc.nasa.gov

4th Berkeley Distribution	  Release 6.6			     NNSPEW(8)

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<https://man.freebsd.org/cgi/man.cgi?query=nnspew&sektion=8&manpath=FreeBSD+Ports+15.0>

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