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PRUNEHISTORY(8)


NAME

  prunehistory - remove file names from Usenet history file


SYNOPSIS

  prunehistory [ -f filename ] [ -p ]


DESCRIPTION

  Prunehistory modifies the history(5) text file to ``remove'' a set of
  filenames from it.  The filenames are removed by overwriting them with
  spaces, so that the size and position of any following entries does not
  change.

  Prunehistory reads the standard input.  The input is taken as a set of
  lines.  Blank lines and lines starting with a number sign (``#'') are
  ignored.  All other lines are should consist of a Message-ID followed by
  zero or more filenames.

  The Message-ID is used as the dbz(3) key to get an offset into the text
  file.	 If no filenames are mentioned on the input line, then all filenames
  in the text are ``removed.'' If any filenames are mentioned, they are
  converted into the history file notation.  If they appear in the line for
  the specified Message-ID then they are removed.

  Since innd(8) only appends to the text file, prunehistory does not need to
  have any interaction with it.


OPTIONS

  -p   Prunehistory will normally complain about lines that do not follow the
       correct format.	If the ``-p'' flag is used, then the program will
       silently print any invalid lines on its standard output.	 (Blank lines
       and comment lines are also passed through.) This can be useful when
       prunehistory is used as a filter for other programs such as reap.

  -f   The default name of the history file is <pathdb in inn.conf>/history;
       to specify a different name, use the ``-f'' flag.


HISTORY

  Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews.  This is
  revision 1.7, dated 1998/04/09.


SEE ALSO

  dbz(3), history(5), inn.conf(5), innd(8).

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