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newsoverview.5
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1995-08-17
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NEWSOVERVIEW(5) NEWSOVERVIEW(5)
NAME
newsoverview - netnews overview files
SYNOPSIS
uunews:/group/.overview
DESCRIPTION
Each newsgroup directory contains a file named
`.overview', containing one-line summaries of articles in
that group. Fields are separated by tabs, and any tabs or
newlines in the original articles headers have been
replaced with spaces. The fields are, in order:
1. article number (file name)
2. subject
3. author
4. date
5. message-id
6. references
7. byte count
8. line count
9...
optionally other headers, as arranged locally (none are
supplied by the database maintenance software, as
shipped).
The line-count and references fields may be empty. If the
optional other headers are present, they include their
header keyword and colon; if they are absent entirely, the
tab after the line-count field may also be absent.
The file is maintained in numerical order, by article num-
ber.
At the time of writing (late 1992), the lines in an
overview file are typically 150-300 characters long, and
an overview file for a typically busy group is often
30,000 bytes to 60,000 bytes long, with notable exceptions
exceeding 500,000 bytes.
EXAMPLES
A few lines from one overview file, with tabs displayed as
`|' and lines continued after `\'.
8870|strange message id's: <something>QUIT|schmitz@scd.hp.com (John Schmitz)\
|18 Sep 1992 19:57:16 GMT|<19dcasINNce@hpscdf.scd.hp.com>||821|
8871|Re: BNF rule for newsgroup names?|kris@tpki.toppoint.de (Kristian Koehntopp)\
28 Aug 1994 1
NEWSOVERVIEW(5) NEWSOVERVIEW(5)
|Fri, 18 Sep 1992 17:51:09 GMT|<1992Sep18.175109.21999@tpki.toppoint.de>\
|<43GQBM4D@cc.swarthmore.edu> <BuLB9y.7Dp@world.std.com>\
<BuLG5A.xH@cs.psu.edu> <339@blars.UUCP>|926||Supersedes: <1234@foovax>
FILES
uunews:/group/.overview
SEE ALSO
newsdb(5)
HISTORY
Written by Geoff Collyer as part of the C News project.
BUGS
The contents of the line-count field should not be
believed and are really pretty worthless yet popular.
There is some confusion about whether the order and con-
tent of the first eight fields is a local decision, or a
standard. It's intended to be a standard; please do not
mess with it. All, repeat all, local variations should be
done by adding the optional fields at the end, and those
fields must include their header keywords (and colons) to
make them self-identifying.
28 Aug 1994 2