Re: [TUHS] First appearance of named pipes

Thanks for the feedback, all. Rand ports were done in 1977 by Sunshine/Zucker. I’ve only come across Rand Ports in the context of V6 and the Arpa crowd 1977-1981. I’ve never seen a reference to Rand Ports on V7 or later. This of course does not mean that it did not exist. I’ve dug further, and it would seem that named pipes under the name ‘fifo’ appeared first in SysIII (1980). That matches with Luderer’s remark. It does not seem to exist in the Research editions. It only appears in BSD in the Reno release, 1990. All in all, it would seem that ‘fifo’s were a SysV thing for most of the 80’s, with the BSD lineage using domain sockets instead (as Clem mentioned). Interestingly, Luderer also refers to a 1978 paper by Steve Holmgren (one of the Arpa Unix authors), suggesting ’sockets’ (in today’s parlance) for interproces communication. Paul PS really nobody on the list recalls Luderer's (et al.) distributed Unix and how it related to other work ??