/CONFIRM
       /NOCONFIRM

    Prompt for positive confirmation before carrying out the
    indicated operation. When wild cards are not used, /NOCONFIRM
    is the default. When wild cards are used, /CONFIRM is the default
    and a prompt is issued for each account to be operated upon.
    Moreover, when wild cards are used, /NOCONFIRM causes only a
    single prompt to be issued-it does not eliminate the prompt
    altogether.