Xref: utzoo news.software.b:2421 news.sysadmin:2530 comp.sources.d:3810
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!vsi1!lmb
From: lmb@vicom.com (Larry Blair)
Newsgroups: news.software.b,news.sysadmin,comp.sources.d
Subject: How to multicast under C News
Message-ID: <1989Jul2.055744.20442@vicom.com>
Date: 2 Jul 89 05:57:44 GMT
Organization: VICOM Systems Inc., San Jose, CA
Lines: 53

We have a number of leaf sites that take identical feeds from us.  As a
result, we only create one batch and then send it to each of the leaves.
For C News, I created a new batch handler, which I called viauuxl.

The enclosed script uses uux -l so that only a single, multiply linked
copy of the batch is used.  If your uux does not support -l, you'll need
to modify appropriately.  Even if you don't have -l, the multicasting
method is a big win.

Also note that the script uses Mail -s.  Change if you system doesn't
support Mail or -s.

#! /bin/sh
# Transmit batch to all the sites listed in $NEWSCTL/lbatchsites.
#
. ${NEWSCONFIG-/usr/lib/news/bin/config}



BATCHNAME=/usr/spool/uucp/newsbatchs/$1.`getdate now`
cat - > $BATCHNAME
if [ $? -ne 0 ]
then
	Mail -s "Could not write $BATCHNAME" usenet << EOF
An attempt to save a leafbatch to $BATCHNAME failed.
Possible causes may be insuffucient space on the filesystem or improper
permissions.  The batch was discarded.
EOF
	rm -f $BATCHNAME
	exit 1
fi
GRADE=-gz
for site in `cat $NEWSCTL/lbatchsites`
do
	case $site in
	-g*)	GRADE=$site; continue;;
	esac

	uux -r -l -n $GRADE $site!rnews \< !$BATCHNAME
	error=$?
	if [ $? -ne 0 ]
	then
		Mail -s "Status $error on $BATCHNAME for $site" usenet << EOF
Uux Failed for $site. Leafbatch script continued for other hosts.
EOF
		exit
	fi
done
rm -f $BATCHNAME

exit 0
-- 
Larry Blair   ames!vsi1!lmb   lmb@vicom.com