overchan - update the news overview database


SYNOPSIS

       overchan [ - | file ]


DESCRIPTION

       Overchan  reads  article data from files or standard input
       if none are specified.  (A single dash in  the  file  list
       means  to  read standard input.)  It uses this information
       to update the news overview database.  Overchan was origi­
       nally  designed  to  be used by InterNetNews or the C News
       ``mkov'' packages to update the database as  the  articles
       come  in.   For  current  inn,  the  database is stored by
       overview method.  This can be  done  within  innd(8)  but,
       still   overchan(8)   can  do  this,  if  <useoverchan  in
       inn.conf> is ``true'' and appropriate  setup  is  done  in
       newsfeeds(5).  file, for example:

              overview!:*:Tc,WnteO:<pathbin in inn.conf>/overchan

       This data consists of a line of text, separated into  four
       parts by a space.  The first part is a token for the arti­
       cle.  The  second  part  is  time  when  the  article  was
       received.  The third part is time when the article will be
       expired(which represents Expires header.)  The fourth part
       is  the data to be stored.  The data in the overview files
       should be expired by running expireover(8).  This is  nor­
       mally  done  by  adding  the  ``expireover''  flag  to the
       news.daily(8) invocation.


HISTORY

       Written by  Rob  Robertson  <rob@violet.berkeley.edu>  and
       Rich  $alz <rsalz@uunet.uu.net> for InterNetNews.  This is
       revision 1.9.2.1, dated 2000/08/17.


SEE ALSO

       expireover(8), inn.conf(5), news.daily(8), newsfeeds(5).


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