#!/bin/sh

set -x

case $# in
0) 1>&2 echo Usage: $(basename $0) files...; exit 1;;
esac
case $1 in
-f*) _fID=$1; shift;;
esac

idx "$@" |sort -u >|ids.idx
lid $_fID |sed -e 's/[ 	].*//' |sort -u >|ids.lid
for file
do
    case x$file in
    x-*) continue;;
    esac
    fid $_fID $file
done |sort -u >|ids.fid

if cmp ids.idx ids.lid
then
    if cmp ids.idx ids.fid
    then
	echo OK
	rm -f ids.idx ids.fid ids.lid
	exit 0
    fi
fi
echo Oops!
exit 1