user —
manage user login information on the system
The user utility acts as a frontend to the
  useradd(8),
  usermod(8),
  userinfo(8), and
  userdel(8) commands. The
  utilities by default are built with EXTENSIONS. This
  allows for further functionality.
For a full explanation of the options available, please see the
    relevant manual page.
  - /etc/skel/.[A-z]*
- Skeleton files for new user
- /etc/usermgmt.conf
- Configuration file for user,
      group(8) and the backend
      commands mentioned above.
Theuser utility exits 0 on success,
  and >0 if an error occurs.
The user utility first appeared in
  NetBSD 1.5. It is based on the
  addnerd package by the same author.
The user utility was written by
  Alistair G. Crooks ⟨agc@NetBSD.org⟩.