#!/bin/sh
# delete-unselected -- delete files named *.CR3 from the current directory
[ -n "$echo" ] && set -x

USAGE='delete-unselected [directory]'

if test $# -gt 1
then
	echo "$USAGE" >&2
	exit 2
fi

case "$1" in
-*)
	echo "$USAGE" >&2
	exit 2
	;;
esac

if test $# -eq 1
then
    echo "$1"
    cd "$1" || exit 1
fi

if test \! -d selected
then
    if test $# -eq 1
    then
	echo "No subdirectory named 'selected' in \'$1\'" >&2
    else
	echo "No subdirectory named 'selected' in ." >&2
    fi
    exit 2
fi

rm *.CR3