#!/bin/sh
thing=$1
shift
dflt=$1
shift
for dir in $*; do
    case "$thing" in
    .)
	if test -d $dir/$thing; then
	    echo $dir
	    exit 0
	fi
	;;
    *)
	if test -f $dir/$thing; then
	    echo $dir/$thing
	    exit 0
	fi
	;;
    esac
done
echo $dflt
exit 1