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NNSPEW(8)							     NNSPEW(8)

NAME
       nnspew - subject database manager (nn)

SYNOPSIS
       nnspew

DESCRIPTION
       nnspew  builds  a  sorted  database of all available subjects in the nn
       article 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
       required.

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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