User defaults on Linux

These are the places where you have to change things like the home directory base:

• /etc/default/useradd (even on non-Debian systems)
  (change these with useradd -D)
  
• /etc/adduser.conf
• Webmin's Users and Groups module configuration

You'd think there'd be one place all this was stored, wouldn't you?

See also /etc/login.defs .