[TUHS] Pipes (was Re: After 50 years, what has the Impact of Unix been?)

[arnold at skeeve.com]

"Greg A. Woods" <woods at robohack.ca> wrote:

> > Are you sure? I think Tom Duff originated it in his "rc" shell.
>
> The Wikipedia entry for "Process substitution" says:
>
> 	Process substitution was available as a compile-time option for
> 	ksh88, the 1988 version of the KornShell from Bell Labs.  The rc
> 	shell provides the feature as "pipeline branching" in Version 10
> 	Unix, released in 1990.
>
> So, if we believe that then indeed ksh88 pioneered process substitution.

I'd forgotten that it was optional in ksh88. It was there out of
the box in ksh93.

Arnold