SQL & PL/SQL

hI ,

How do we check Privileges for all users whether grant privilege is given or not?

I tried to check

select * form all_users

Select * from dict where table_name like '%PRIV%'
SELECT *
  FROM all_tab_privs
  WHERE table_name in (select  object_name from  user_objects where object_type = 'PROCEDURE')

I want to check for all users whether we have granted privileges or not.