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arnmaster.doc
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ArnMaster.doc
ArnMaster V0.8 - (C)opyright 1991-92 by Roland Bless
1. Copyright
---------
See Arn.doc for copyright and distribution.
2. Purpose
-------
ArnMaster creates (small) databases for Arn. These databases are
read by Arn and inform it about subject,author,lines,followups,etc.
To get fast and comfortable news-reading these databases are required.
Because of their clever design they are quite small and can be used
on systems with low disk space, too.
3. .arnmasterrc
------------
ArnMaster requires a configuration file, yet (maybe removed in
later versions). It's called ".arnmasterrc" and should be placed into
your UULIB: directory.
If you have .arnrc in your UULIB: you can use this instead and add
necessary entries there (.arnmaster should not exist then because it
has higher priority). Note that the former keyword NEWSDIRTYPE is no
longer valid in .arnrc!
Currently there are only four entries required:
ACTIVEFILE where is your active-file and what's its name?
~~~~~~~~~~
ARNMASTERLOG where should ArnMaster have its logfile?
~~~~~~~~~~~~
DOTDIRS if your newsgroups-hierarchy is of the following form:
~~~~~~~ comp.sys.amiga.programmers is stored in
UUNEWS:comp.sys.amiga.programmers
then this entry should exist!
The other form is
UUNEWS:comp/sys/amiga/programmers
which is the default and the DOTDIRS keyword should
be deleted from your config-file in this case.
NEWSDIR Specify the name of your newsgroups directory.
~~~~~~~ If this entry is missing UUNEWS: is default.
Example:
ACTIVEFILE UULIB:news/active
ARNMASTERLOG T:logfile
DOTDIRS Yes
3. Usage
-----
ArnMaster should be placed the directory where your other UUCP commands
feel comfortable (e.g. UUCP:c or UUCP:bin).
User of Dillon's AmigaUUCP _MUST_ specify the -A option (unless you
already have an active-file).
ArnMaster can only be started from CLI:
arnmaster [-idALCP(n)X] [-g|G groupname]
Options:
-i Info about usage and version.
-d Debug. Some more information is printed during scanning on
standard-output (stdout).
-P(n) Set Task Priority to (n). Example: -P-2 sets the priority to
-2.
-X Deletes ALL databases.
-g name Scan only group name.
-G dir Scan only special directory and create .newsdb.
Normally Arn uses this option if it is directed to a
directory.
-A Scan all newsgroups and update your ACTIVEFILE.
IMPORTANT: This switch MUST be present if you use Dillon's
AmigaUUCP!!
-L Generates Lines: number in databases if missing in article
header. The original article header is untouched!
Because counting the lines will require some time this
option is NOT default. In later versions you can tell the
daemon (to be written) that this should be the default via an
ENV-variable.
-C Check for inconsistent databases.
This option forces Arnmaster to read all the databases
and to rescan articles if they are not in the database,
but in the active-range. Some articles are expired in
the active range or were cancelled, so it's legal that
they are missing in the database.
This option was introduced due to a bug in Arnmaster
which sometimes caused missing datasets in the databases.
THIS OPTION WILL MAKE YOUR DATABASES AS ACTUAL AS POSSIBLE.
4. Action
------
ArnMaster reads your activefile and compares it with the copy active.bak.
If there are differences the group is scanned.
[If you specified the -A option ArnMaster will scan all groups that it
found in ACTIVEFILE. If you don't have an ACTIVEFILE yet, you simply
should list ALL newsgroups you get in the ACTIVEFILE, one groupname per
line. You maybe can copy the "Newsgroups" file from AmigaUUCP to
ACTIVEFILE, if there are _no_ entries after the newsgroupname in a line.
Don't forget (although not required) to set the 'm' flag for moderated
groups, once ArnMaster 'created' the ACTIVEFILE, see Arn.doc for
active-file format.]
First, the old database is read if it exists, discarding all expired
entries, then all new articles are scanned and the information is
written back into a new database.
The databases are created in the group directories with the name
.newsdb.
ArnMaster assumes that 0 is not a valid article-number.
If all groups are scanned, the current active file is copied under the
same name with the extension .bak.
** Note: Databases may contain false information if you delete articles
manually (esp. articles with highest numbers). New articles
get old subjects from deleted articles.
You can try the "-C" option first, but if this fails
delete all databases with "arnmaster -X" and the ACTIVEFILE.bak
copy, then invoke arnmaster once again and all databases should
be corrected.
To have consistent databases it is recommended to start
arnmaster after each expire-run, too (best with -C)!!
An ACTIVE-FILE is no longer required if you use the -A option.
5. LOGFILE
-------
The main logfile entries look like this:
arnmasterV0.6 -(09 Feb 92 19:18:37)- group.name: 12/102:102
The number before the slash are the articles that Arnmaster should have
scanned (in this example 12). This number is calculated from the
difference between ACTIVEFILE and ACTIVEFILE.bak. If there is a 0
it means that Arnmaster looked for expired entries.
The next number shows how many articles Arnmaster actually has got in
its database. The number after the colon shows how many articles it
should be refering to the ACTIVEFILE. If these numbers are not the same
then you
6. ERRORS
------
You should report database errors to bugs@spirits.ka.sub.org, but only
if you send an lharced and uuencoded .newsdb with the concerning article
header. You can find out the article number and group in your LOGFILE.
7. BUGS
----
Sometimes you could get inconsistent databases.
You should check from time to time with -C option for those :-)
Version history:
+ new feature , - changed or bug fix
0.5 first release with alpha version 1.00 of Arn
0.6 - Fixed bug in database reading, which sometimes caused a rejection of
articles which were not expired
+ Added -L option for counting lines in articles where the Lines:-
header-line is missing.
+ Added -C option for checking for and rebuilding inconsistent
databases.
- Complete rescan if article-numbers in ACTIVEFILE.BAK are higher than
in ACTIVEFILE.
0.7 - -i option didn't free all allocated memory.
0.8 - bug removed that caused endless loops with "Re^" in subject.
- bug in finding realnames removed.