Provided by: inn2_2.6.0-2_amd64 bug

NAME

       batcher - Article batching for InterNetNews

SYNOPSIS

       batcher [-rv] [-a articles] [-A total-articles] [-b size] [-B total-size] [-i string] [-N
       batches] [-p process] [-s separator] host [input]

DESCRIPTION

       batcher reads a list of files and prepares news batches for the specified host.  It is
       generally used to prepare UUCP feeds, but the resulting batches can be used by any
       application that uses rnews(8) to inject the articles.  It is normally invoked by a script
       run out of cron that uses shlock to lock the host, followed by ctlinnd to flush the batch
       file.  See send-uucp(8) for a front-end for batcher.

       batcher reads the file input, or standard input if no file is given.  If input is a
       relative file name, it is assumed to be in pathoutgoing as set in inn.conf.  Blank lines
       and lines starting with a number sign ("#") are ignored.  All other lines in the input
       should consist of one or two fields separated by a single space.  The first field is the
       storage API token of an article.  The second field, if present, specifies the size of the
       article in bytes.

       By default, batches are written to standard output (which isn't very useful if more than
       one batch is output), but see the -p option.

OPTIONS

       -a articles
           This flag limits the number of articles included in each batch.  The default is no
           limit.  A new batch will be started when either the total bytes or the number of
           articles written exceeds the specified limits.

       -A total-articles
           Limits the total number of articles written for all batches.  As soon as the total
           number of articles written to batches reaches or exceeds total-articles, all
           additional articles in the input will be deferred.  The default is no limit.

       -b size
           This flag sets the size limit for each batch; as soon as at least this much data has
           been written out, a new batch will be started.  The default size is 60 KB.  Using "-b
           0" will allow unlimited batch sizes.

       -B total-size
           Limits the total number of bytes written for all batches.  As soon as the total bytes
           written to batches reaches or exceeds total-size, all additional articles in the input
           will be deferred.  The default is no limit.

       -i string
           A batch starts with an identifying line to specify the unpacking method to be used on
           the receiving end.  When this flag is used, string, followed by a newline, will be
           output at the start of each batch.  The default is to have no initial string (under
           the assumption that either the processor specified with the -p flag or some other
           later process will add the appropriate line).

       -N batches
           Limits the total number of batches written.  As soon as the number of batches written
           reaches or exceeds batches, all additional articles in the input will be deferred.
           The default is no limit.

       -p process
           By default, batches are written to standard output, which is not useful when more than
           one output batch is created.  If this option is given, each batch will instead be fed
           via a pipe to the shell command process.  The process argument must be an sprintf(3)
           format string, which may have a single %s parameter that will be replaced with the
           host name.

           A common value is:

               ( echo '#! gunbatch' ; exec gzip -c ) | uux - -r -z %s!rnews

           which generates gzip-compressed batches and feeds them to uux.

       -r  By default, batcher reports errors to pathlog/errlog.  To suppress this redirection
           and report errors to standard error, use the -r flag.

       -s separator
           Each article in a batch starts with a separator line that indicates the size of the
           article.  separator must be an sprintf(3) string, which may have a single %ld in the
           string that will be replaced with the size of the article.  If the separator is not
           empty, a newline will also be appended to it when it is added to the beginning of each
           article.

           The default separator is:

               #! rnews %ld

           and this should rarely be changed.

       -v  Upon exit, batcher reports statistics via syslog.  With this flag, the statistics will
           also be printed to standard output.

EXIT STATUS

       If the input is exhausted and all batches are created successfully, batcher will exit with
       a zero status.

       If any of the limits specified with -A, -B, or -N flags are reached, or if there is an
       error in writing a batch, batcher will try to spool the remaining input by copying it to a
       file as follows:

       · If there was no input filename, the remaining input will be copied to pathoutgoing/host.

       · If an input filename was given, the remaining input will be copied to a temporary file
         named by appending ".bch" to the end of input (and qualified by adding pathoutgoing if
         input was not a fully qualified path).  If this happens successfully, batcher will then
         try to rename this temporary file to input (thus replacing input with a copy of itself
         with all of lines for the successfully batched articles removed).

       Upon receipt of an interrupt or termination signal, batcher will finish batching the
       current article, close the batch, and then rewrite the batch file as described above.

HISTORY

       Written by Rich $alz <rsalz@uunet.uu.net> for InterNetNews.  Rewritten by Russ Allbery
       <eagle@eyrie.org> in POD.

       $Id: batcher.pod 9767 2014-12-07 21:13:43Z iulius $

SEE ALSO

       ctlinnd(8), inn.conf(5), newsfeeds(5), rnews(8), send-uucp(8), shlock(1).