Use these settings to specify the read/write/execute permissions (in octal) assigned to each item, as well as the item's group
            and user IDs.
            
         
         
         
         
            - File Permissions
 
            - A three digit octal number that specifies the read, write, and execute permissions assigned to files.
 
            - Group ID
 
            - The ID of the group. The /etc/password file contains the mapping information for the name (the corresponding group name and
               group number). The root is always 0. 
               
            
 
            - User ID
 
            - The ID associated with a user. The /etc/group file contains the mapping information for the user ID (the corresponding user
               name, user number, and group number). The root is always 0.