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PRUNEHISTORY(8)					  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  differ-
	      ent name, use the ``-f'' flag.

HISTORY
       Written	by  Rich  $alz <rsalz@uunet.uu.net> for InterNet-
       News.  This is revision 1.1.2.1, dated 1999/06/12.

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

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