mod-active - Batch processing of newsgroups creation and removal


   mod-active [ctlinnd-command-file ...]


   mod-active is a Perl script that updates the active file based on its
   input lines of ctlinnd "newgroup", "rmgroup" and "changegroup"
   commands.  It pauses the server briefly while the existing active file
   is read and rewritten, which not only keeps innd from updating the
   active file but also locks against other instances of mod-active.

   The script must be run as the news user.

   The input to mod-active can come either from one or more ctlinnd-
   command-file files named on the command line, or from the standard
   input.  Typically its input is the output from the docheckgroups or
   actsync commands.  Every line which contains the string "ctlinnd
   newgroup", "ctlinnd rmgroup", or "ctlinnd changegroup", optionally
   preceded by whitespace and/or the path to ctlinnd, is noted for the
   update.  Redundant commands, such as a newgroup directive for a group
   that already exists, are silently ignored.  All other lines in the
   input are also silently ignored.  After the new active file has been
   generated, the existing one is renamed to active.old and the new one is
   moved into place.  The script then displays the differences between the
   two files.  Any groups that were added to the active file are also
   added to the active.times file with the string "checkgroups-update".

   Please note that no syntax checking is performed on group names by mod-


   Though innd is paused while mod-active works, it is not inconceivable
   that there could be a conflict if something else tries to update the
   active file during the relatively short time that mod-active is
   working.  The two most realistic ways for this to happen are either by
   an administrator concurrently doing a manual ctlinnd command, or by
   innd receiving a control message, then mod-active pausing the server,
   then the control message handler script that innd forked running its
   own ctlinnd command while mod-active is working.  Note that such
   scenarios are very unlikely to happen.


   Written by David C Lawrence <> for InterNetNews.  Converted
   to POD by Julien Elie.


   active(5), active.times(5), actsync(8), ctlinnd(8), docheckgroups(8),


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