This relies on useradd, usermod, and userdel utilities on the system.
The argument name is required; if state is not provided, present is
assumed.  Other options supported for creating or modifying an existing
account:  uid, gid, comment, home, shell, and password.  If managing the
password, it must already be encrypted.  When creating an account, you
can also provide the argument createhome to control whether the home
directory is created.  Arguments supported for deleting an account are:
force (remove account even if user is logged in) and remove (remove home
directory).