Library /sys$common/syshlp/sysmanhelp.hlb DISKQUOTA, SHOW, Qualifiers, /OUTPUT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /OUTPUT[=filespec]

    Directs output to the specified file. Without a file
    specification, /OUTPUT defaults to SYSMAN.LIS in the current
    directory on the local node where you are running SYSMAN.