(No '!'). My mistake was the following. There was one application that asked for a root password for installation. I did this
temporarily and used "passwd -d" for deletion. Now I learnt that one should call "passwd -l" (minus ell) for doing this. Mea
culpa: the Ubuntus documentation says so somewhere.
Thanks, Kees, for your answer.
In fact on my system
sudo grep root /etc/shadow
gives
root::...
(No '!'). My mistake was the following. There was one application that asked for a root password for installation. I did this
temporarily and used "passwd -d" for deletion. Now I learnt that one should call "passwd -l" (minus ell) for doing this. Mea
culpa: the Ubuntus documentation says so somewhere.
Consider the problem solved.
Regards,
Jens