VMS Help DIRECTORY, Qualifiers, /OUTPUT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /OUTPUT[=filespec]
       /NOOUTPUT

    Controls where the output of the command is sent. By default,
    the display is written to the current SYS$OUTPUT device. The
    asterisk (*)  and the percent sign (%) wildcard characters are
    not allowed.

    If you enter the /OUTPUT qualifier with a partial file
    specification (for example, /OUTPUT=[KIER]), DIRECTORY is the
    default file name and .LIS the default file type. If you enter
    the /NOOUTPUT qualifier, output is suppressed.

    If the output will be written to a file in the same directory,
    the output file name will appear in the directory listing.