I have Ubuntu 12.04. Installed libnss-extrausers and configured nsswitch.conf. Now, users registered in /var/lib/extrausers/{passwd,group,shadow}
are recognized by the system and can login.
However, common user management programs (passwd, userdel, usermod, groupadd, groupmod) only work for users registered at /etc/{passwd,group,shadow}
Is there any configuration to make these programs work with libnss-extrausers, or simply recognize /var/lib/extrausers/{passwd,group,shadow}
as user data files?