> echo "SELECT * FROM pg_authid;" | sudo -u postgres psql
  oid  |           rolname           | rolsuper | rolinherit | rolcreaterole | rolcreatedb | rolcanlogin | rolreplication | rolbypassrls | rolconnlimit |                                                              rolpassword                                                              | rolvaliduntil 
-------+-----------------------------+----------+------------+---------------+-------------+-------------+----------------+--------------+--------------+---------------------------------------------------------------------------------------------------------------------------------------+---------------
    10 | postgres                    | t        | t          | t             | t           | t           | t              | t            |           -1 |                                                                                                                                       | 
  6171 | pg_database_owner           | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  6181 | pg_read_all_data            | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  6182 | pg_write_all_data           | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  3373 | pg_monitor                  | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  3374 | pg_read_all_settings        | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  3375 | pg_read_all_stats           | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  3377 | pg_stat_scan_tables         | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  4569 | pg_read_server_files        | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  4570 | pg_write_server_files       | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  4571 | pg_execute_server_program   | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  4200 | pg_signal_backend           | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  4544 | pg_checkpoint               | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  4550 | pg_use_reserved_connections | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
  6304 | pg_create_subscription      | f        | t          | f             | f           | f           | f              | f            |           -1 |                                                                                                                                       | 
 16388 | dbadmin                     | f        | t          | f             | t           | t           | f              | f            |           -1 | SCRAM-SHA-256$4096:YUFqi+cAZscxHSeXOvzN6A==$pbrqmbIRxqeVNMt9QK4mCP/oFnOZh14y61DC8oHljGw=:SRLJIxF246EpXUFlTm92q3+a5G7zaAKAfsHMvxNsgmg= | 
 16391 | dbuser                      | f        | t          | f             | f           | t           | f              | f            |           -1 | SCRAM-SHA-256$4096:RpnqCLAvwGLKyys/e4+WXA==$ZuKyfVh8FjVMraSLdy5qt5oyBcTk7fVaCQ60afrWK1A=:viPwJxwuxp6lFsDWsvmFXtOJ0l8fUMP3L8PlMZiehrI= | 
 16418 | dbcheck                     | f        | t          | f             | f           | t           | f              | f            |           -1 |                                                                                                                                       | 
(18 rows)