Contrary to a lot of the distant opinions here, SVr4 was actually a joint project between USL (the AT&T commercial-UNIX organization) and Sun. The intent was to bring together the two different commercial-UNIX cults (what Stu Feldman once referred to as Sunni and Shiite UNIX). I was at Bell Labs while this was going on, but well off to the side of the effort, in a research group where we tended (foolishly) to look down our noses a bit at the whole thing. I do know that there were a lot of ruffled feathers within USL about the allegedly overbearing Sun guys, and it wouldn't surprise me a bit to hear that there were similar feelings going the other way. On the other hand there were some pretty smart people involved at a technical level on all sides. Certainly it wasn't a one-way street, with BSD-isms being injected into a USG system or vice versa. Norman Wilson Toronto ON