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

       /BY_OWNER[=[uic]]
       /BY_OWNER[=option]

    Input or Output File Qualifier, or Output Save-Set Qualifier

    As an input file-selection qualifier, /BY_OWNER causes BACKUP
    to process files owned by the specified UIC. Specify the UIC as
    octal numbers or in alphanumeric format (in the form [g,m]). Note
    that the UIC specification must include the brackets. UIC formats
    are described in the OpenVMS User's Manual. If you specify this
    qualifier without a UIC, the default UIC is the current process
    UIC. If you do not specify this qualifier, BACKUP processes all
    files on the volume.

    As an output file qualifier, /BY_OWNER redefines the owner UIC
    for each file restored during the operation. You can use one of
    the following options:

    DEFAULT     Sets the owner UIC to the user's current default UIC.
                This option is the default if you do not specify the
                /BY_OWNER qualifier, except in image and incremental
                restore operations, when ORIGINAL is the default
                option.
    ORIGINAL    Retains the owner UIC of the file being restored.
                This option is the default if you specify the /BY_
                OWNER qualifier with no option. This option is also
                the default for incremental restore operations. To
                use this option, the UIC must be yours, or you must
                have the SYSPRV user privilege or be the owner of the
                output volume.
    PARENT      Sets the owner UIC to the owner UIC of the directory
                to which the file is being restored or copied. To
                use this option, the parent UIC must be yours, or you
                must have the SYSPRV user privilege or be the owner
                of the output volume.
    [uic]       Sets the owner UIC to the UIC specified. To use this
                option, the UIC must be yours, or you must have the
                SYSPRV user privilege or be the owner of the output
                volume.

    As an output save-set qualifier, /BY_OWNER specifies the owner
    UIC of the save set. If you omit the /BY_OWNER qualifier, the
    save set receives the UIC of the current process. To use /BY_
    OWNER as an output save-set qualifier, you must have the SYSPRV
    user privilege or the UIC must be your own. Output File Qualifier

    Redefines the owner user identification code (UIC) for restored
    files.