#!/bin/bash

name=`expr $TAR_ARCHIVE : '\(.*\)-.*'`
case $TAR_SUBCOMMAND in
-c) echo create 
    ;;
-d|-t|-x) test -r ${name:-$TAR_ARCHIVE}-$TAR_VOLUME || exit 1
    ;;
 *)  exit 1

esac
echo ${name:-$TAR_ARCHIVE}-$TAR_VOLUME >&$TAR_FD