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NEWSOVERVIEW(8CN) NEWSOVERVIEW(8CN) NAME initov, domkov, mkov, expov - maintain netnews overview database SYNOPSIS /usr/local/libexec/cnews/nov/initov /usr/local/libexec/cnews/nov/domkov /usr/local/libexec/cnews/nov/mkov [ -an ] [ -o stamp ] [ file ... ] /usr/local/libexec/cnews/nov/expov DESCRIPTION These programs keep the netnews overview database for newsreaders up to date. Initov creates the database initially by reading all the articles under /var/news. This takes a long time (on the order of 12 hours, in late 1992), and can be avoided by letting domkov incrementally generate a database for new articles as they arrive; after a week or so, most ar- ticles should be in the database. The news system should not be locked when initov is run; initov takes care of the necessary locking inter- nally, and deals with articles that arrive while it is running (primar- ily by deferring their processing to domkov). Domkov is run from newsrun(8CN). It updates the database files from the header stream produced by relaynews(8CN) for new articles. Mkov normally reads a stream of RFC 1036 headers, with those of each article separated from those of its neighbours by an empty line, from files (standard input if none) and writes a summary in the format of newsoverview(5), but with a field containing the article's news spool directory name relative to /usr/spool/news prepended, on standard out- put. -a reads articles instead of a header stream (but ignores filess which are directories or have names which do not resemble article names, i.e. do not have a leading digit on their last component). and omits the initial directory name field; -n requests the initial direc- tory name despite -a; -o causes only articles older than the file stamp to be summarised. Expov should be run after expire(8CN) (and is, by doexpire(8CN)) to delete database entries for missing articles. FILES /var/news/group/.overview overview database /var/lib/news/LOCKoverview lock file for the database /var/lib/news/headers stream of headers from newly-arrived articles /var/lib/news/active active newsgroups SEE ALSO newsoverview(5), expire(8CN), relaynews(8CN) HISTORY Written by Geoff Collyer, with minor contributions from Henry Spencer, as part of the C News project. BUGS mkov -o is a blemish, but it really speeds up initov. 15 Aug 1994 NEWSOVERVIEW(8CN)
NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY | BUGS
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