echo -n "Answer yes or no (default is yes): "
read a
if [ z$a = "zNO" -o z$a = "zNo" -o z$a = "zno" -o z$a = "zN" -o z$a = "zn" ]
then
        echo "   ok. No registration. You won't be advised of new releases of AGAT"
else
        echo "   sending mail for registration ..."
        echo "AGAT registration" | mail oarsac@sophia.inria.fr
        echo "   mail for registration sent."
        echo "   (if all works fine you should get an acknowledgment for registration)"
fi
