csclean [-q | -v] 
        [-g graceperiod]
        clean domain

-q

Run in quiet mode: 

• Display no information if the operation is successful (errors, if they occur, are displayed).

• Suppress confirmation prompting for dangerous commands.

  Default is off.

-v

Run in verbose mode: Display all available information about the command being performed. Default is off. 

-ggraceperiod

Specifies the number of days to have elapsed since the calendar service was deleted for a user. 

The default is 10 days. 

domain

Specifies the domain in which to remove calendars for all users and resources. 

An asterisk (*) removes all calendars for all users and resources in all domains.