batcher man page on 4.4BSD

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BATCHER(8)							    BATCHER(8)

NAME
       batcher - article batching backend for InterNetNews

SYNOPSIS
       batcher	[  -a arts ] [ -A total_arts ] [ -b size ] [ -B total_size ] [
       -i string ] [ -N num_batches ] [ -p process ] [ -r ] [ -s separator ] [
       -S alt_spool ] [ -v ] host [ input ]

DESCRIPTION
       Batcher	reads  uses  a	list  of files to prepare news batches for the
       specified host.	It is normally invoked by a script run out of  cron(8)
       that  uses  shlock(1)  to  lock the host name, followed by a ctlinnd(8)
       command to flush the batchfile.

       Batcher reads the named input file, or standard input  if  no  file  is
       given.	   Relative	pathnames    are    interpreted	   from	   the
       /var/spool/news/out.going directory.  The input is taken as  a  set  of
       lines.	Blank  lines and lines starting with a number sign (``#'') are
       ignored.	 All other lines should consist of one or two fields separated
       by  a  single  space.  The first field is the name of a file holding an
       article; if it is not an an absolute pathname it is taken  relative  to
       the  news spool directory, /var/spool/news/spool.  The second field, if
       present, specifies the size of the article in bytes.

       The ``-S'' flag may be used to specify an alternate spool directory  to
       use  if the article is not found; this would normally be an NFS-mounted
       spool directory of a master server with longer expiration times.

       By   default,   the   program	sets	its    standard	   error    to
       /var/spool/news/data/errlog.   To  suppress  this  redirection, use the
       ``-r'' flag.  Upon exit, batcher reports statistics via syslog(3).   If
       the ``-v'' flag is used, they will also be printed on the standard out‐
       put.

       Batcher collects the text of the named articles into batches.  To limit
       the  size  of  each batch, use the ``-b'' flag.	The default size is 60
       kilobytes.  Using ``-b0'' allows unlimited batch sizes.	To  limit  the
       number  of articles in each batch, use the ``-a'' flag.	The default is
       no limit.  A new batch will be started when either the  byte  count  or
       number of articles written exceeds the specified limits.

       To  limit  the  total  number of bytes written for all batches, use the
       ``-B'' flag.  To limit the total number of articles that can be batched
       use  the ``-A'' flag.  To limit the total number of batches that should
       be created use the ``-N'' flag.	In all three  cases,  the  default  is
       zero, which is taken to mean no limit.

       A batch starts with an identifying line to specify the unpacking method
       to be used on the receiving end.	 When the ``-i''  flag	is  used,  the
       initial	string,	 string,  followed by a newline, will be output at the
       start of every batch.  The default is to have no initial string.

       Each article starts with a separator line to indicate the size  of  the
       article.	  To  specify  the  separator  use the ``-s'' flag.  This is a
       sprintf(3) format string which can  have	 a  single  ``%ld''  parameter
       which  will  be given the size of the article.  If the separator is not
       empty, then the string and a newline will be output before every	 arti‐
       cle.  The default separator is ``#! rnews %ld''.

       By default, batches are written to standard output, which is not useful
       when more than one output batch is created.  Use	 the  ``-p''  flag  to
       specify	the  shell command that should be created (via popen(3)) when‐
       ever a new batch is started.  The process is a  sprintf	format	string
       which  can  have a single ``%s'' parameter which will be given the host
       name.  A common value is:
	      ( echo '#! cunbatch' ; exec compress ) | uux - -r -z %s!rnews

       If the input is exhausted, batcher will exit with a  zero  status.   If
       any of the limits specified with the ``-B,'' ``-A,'' or ``-N'' flags is
       reached, or if there is an error writing the batch, then	 batcher  will
       try  to	spool  the input, copying it to a file.	 If there was no input
       filename,    the	   standard    input	 will	  be	 copied	    to
       /var/spool/news/out.going/host  and the program will exit.  If an input
       filename was given, a temporary file named input.bch (if	 input	is  an
       absolute pathname) or /var/spool/news/out.going/input.bch (if the file‐
       name does not begin with a  slash)  is  created.	  Once	the  input  is
       copied,	batcher	 will try to rename this temporary file to be the name
       of the input file, and then exit.

       Upon receipt of an interrupt or termination signal, batcher will finish
       sending	the  current  article,	close  the batch, and then rewrite the
       batchfile according as described in the previous paragraph.

HISTORY
       Written by Rich $alz <rsalz@uunet.uu.net> for  InterNetNews.   This  is
       revision 1.13, dated 1992/09/14.

SEE ALSO
       ctlinnd(8), newsfeeds(5), shlock(1).

								    BATCHER(8)
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