overchan - update the news overview database
overchan [ file ... ]
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 originally 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 in a selected overview method.
This can be done within innd(8) itself, but overchan(8) can be used
instead, if <useoverchan in inn.conf> is ‘‘true’’ and appropriate setup
is done in newsfeeds, for example:
overview!:*:Tc,WnteO:<pathbin in inn.conf>/overchan
Overchan input data consists of a line of text, separated into four
parts by a space. The first part is a token for the article. The sec-
ond part is time when the article was received. The third part is time
when the article will be expired (which represents the Expires header).
The fourth part is the data to be stored.
The data in the overview files should be expired by running expire-
over(8). This is normally done by adding the ‘‘expireover’’ flag to
the news.daily(8) invocation.
Written by Rob Robertson <email@example.com> and Rich $alz
<firstname.lastname@example.org> for InterNetNews. This is revision 1.11, dated
expireover(8), inn.conf(5), news.daily(8), newsfeeds(5).
Man(1) output converted with