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Initial revision

#!/bin/sh
# : newsgroups.SH,v 4.3 85/05/01 11:43:27 lwall Exp $
# 
# :	newsgroups.SH,v $
# Revision 4.3  85/05/01  11:43:27  lwall
# Baseline for release with 4.3bsd.
# 

export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0; kill $$)

: syntax: newsgroups [pattern] [pipeflag]

: System Dependencies

: You might want to change pager to a "make column" program if you have one.
: On the other hand, if your kernel does paging, cat would probably do.
pager="/usr/ucb/more"
active="/tmp/active.$$"

: End of system dependencies, hopefully

/usr/local/lib/rn/getactive $active

if /bin/test $# -ge 2 ; then
    pager=cat
else
    echo "Completely unsubscribed newsgroups:"
fi

dotdir=${DOTDIR-${HOME-$LOGDIR}}

: Throwing .newsrc into the pot twice is a lovely hack to prevent
: bogus newsgroups from showing up as unsubscribed.

cat $dotdir/.newsrc $dotdir/.newsrc $active | \
sed	-e '/^options/d' \
	-e '/^[	 ]/d' \
	-e '/^control/d' \
	-e '/^to\./d' \
	-e 's/^\([^ !:]*\)[ !:].*$/\1/' \
	-e "/.*$1/p" \
	-e 'd' | \
sort | uniq -u | $pager
if /bin/test $# -ge 2 ; then
    exit
fi
echo -n "[Type return to continue] "
read tmp
echo ""
echo "Unsubscribed but mentioned in .newsrc:"
sed < $dotdir/.newsrc \
	-e "/$1.*!/"'s/^\([^!]*\)!.*$/\1/p' \
	-e 'd' | \
sort | $pager
rm $active

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