if test $# -ge 1 -a "$1" = -k; then
   shift
   key="$1"
   shift
else
   key=
fi
if test $# -ge 1; then
   atob "$key" < $1 | uncompress | tar xvf -
   mv $1 /usr/tmp/$1.$$
else
   atob "$key" | uncompress | tar xvf -
fi
