Need tape utility to read VMS BACKUP tape on Unix/Ultrix.

[Larry Gillespie]

I know someone must have solved this problem.  I have access to Unix systems,
4.3bsd as well as Ultrix, but no VMS.  A customer sent me a tape which was
made on VMS 4.6 with the BACKUP command.  I want to read this tape, of course.
Does anyone know of a utility, whether public domain or otherwise, which does
the trick?  Thanks in advance.

-Larry Gillespie

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(415) 932-6900