Comment # 1 on bug 1190864 from Ancor Gonzalez Sosa

I think the best way to know what are the default values that useradd would use
is to run:

> useradd -D

I also think the best way to change the default values (even better than
introducing/modifying the files mentioned by the reporter) would be through
useradd itself. Something like:

> useradd -D --shell /bin/sh

In my Tumbleweed, that generates the file /etc/default/useradd

That being said, you can still hand-craft that file and that should work just
fine with useradd. At least for now.

Regarding YaST, it has fallen a bit behind regarding management of the useradd
configuration. But we are working on it as we speak and the plan for the
following weeks is to release a new version of yast2-users that would fully
rely on "useradd -D" to read and write the configuration.