In order to install a service on Ubuntu 14.04 like "openemm" I have created a user name and group:
sudo sudo useradd openemm -m -G openemm -d /home/openemm
Now I want to login with that username
Unfortunatelly the system asks me for a password which I have never set:
Password: su: Authentication failure
Is there a default password? If not, how do I switch to that user in order to start the service
su - openemm openemm.sh start
Thank you for any help on this.