filechan man page on Mandriva

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FILECHAN(8)							   FILECHAN(8)

NAME
       filechan - file-writing backend for InterNetNews

SYNOPSIS
       filechan [ -d directory ] [ -f num_fields ] [ -m mapfile ] [ -p pidfile
       ]

DESCRIPTION
       Filechan reads lines from standard input and copies certain  fields  in
       each  line  into files named by other fields within the line.  Filechan
       is intended to be called by innd(8) as a channel feed.  (It  is	not  a
       full  exploder  and  does  not  accept commands; see newsfeeds(5) for a
       description of the difference, and buffchan(8)  for  an	exploder  pro‐
       gram.)

       Filechan	 input	is interpreted as a sequence of lines.	Each line con‐
       tains a fixed number of initial fields, followed by a  variable	number
       of  filename fields.  All fields in a line are separated by whitespace.
       The default number of initial fields is one.

       For each line of input, filechan writes the initial  fields,  separated
       by  whitespace and followed by a newline, to each of the files named in
       the filename fields.  When writing to a	file,  filechan	 opens	it  in
       append  mode  and tries to lock it and change the ownership to the user
       and group who owns the directory where the file is being written.

       Because the time window in which a file is open is very small,  compli‐
       cated  flushing	and locking protocols are not needed; a mv(1) followed
       by a sleep(1) for a couple of seconds is sufficient.

OPTIONS
       -f num_fields
	      The ``-f'' flag may be used to specify  a	 different  number  of
	      initial fields.

       -d directory
	      By  default,  filechan  writes  its  output  into	 the directory
	      <pathoutgoing in inn.conf>.  The ``-d''  flag  may  be  used  to
	      specify  a  directory the program should change to before start‐
	      ing.

       -p pidfile
	      If the ``-p'' flag is used, the program will write a  line  con‐
	      taining its process ID (in text) to the specified file.

       -m mapfile
	      A	 map  file  may	 be specified by using the ``-m'' flag.	 Blank
	      lines and lines starting with a number sign (``#'') are ignored.
	      All other lines should have two host names separated by a colon.
	      The first field is the name that may appear in the input stream;
	      the  second field names the file to be used when the name in the
	      first field appears.  For example, the following map file may be
	      used  to	map  the  short names used in the example below to the
	      full domain names:

	      # This is a comment
	      uunet:news.uu.net
	      foo:foo.com
	      munnari:munnari.oz.au

EXAMPLES
       If filechan is invoked with ``-f 2'' and given the following input:

	      news/software/b/132 <1643@munnari.oz.au> foo uunet
	      news/software/b/133 <102060@litchi.foo.com> uunet munnari
	      comp/sources/unix/2002 <999@news.foo.com> foo uunet munnari

       Then the file foo will have these lines:

	      news/software/b/132 <1643@munnari.oz.au>
	      comp/sources/unix/2002 <999@news.foo.com>

       the file munnari will have these lines:

	      news/software/b/133 <102060@litchi.foo.com>
	      comp/sources/unix/2002 <999@news.foo.com>

       and the file uunet will have these lines:

	      news/software/b/132 <1643@munnari.oz.au>
	      news/software/b/133 <102060@litchi.foo.com>
	      comp/sources/unix/2002 <999@news.foo.com>

HISTORY
       Written by Robert Elz <kre@munnari.oz.au>, flags	 added	by  Rich  $alz
       <rsalz@uunet.uu.net>.  This is revision 5909, dated 2002-12-03.

SEE ALSO
       buffchan(8), inn.conf(5), innd(8), newsfeeds(5).

								   FILECHAN(8)
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