Postgres:User Creation

To create a user in Postgres:

1. Log in/su over to the pgsql account.
2. The basic syntax is createuser username.
3. createuser takes some useful switches:
   1. -D username cannot create databases.
   2. -d username can create databases.
   3. -A username cannot create more users.
   4. -a username can create more users.
   5. -P prompt for password for username.
   6. -E encrypt that password.