-d Number

Shows records for the previous Number days (default=1).

-E

Shows only records with error severity level or above. 

-F

Shows only records with fatal severity level. 

-i LogID

Shows only records with a specified syslog ID. 

Syslog IDs are displayed on some error messages and reference a specific System Log entry. 

-W

Shows only records with warning severity level or above (default). 

-X

Includes reported cause of error, if available.