[TUHS] Unix without pipes

Ron Natalie ron at ronnatalie.com
Tue Feb 27 03:14:48 AEST 2018

If I'm remembering correctly, miniunix didn't have pipes.   The shell faked
it by taking the output of the first program into a file and then  using it
as the input for the second.
Didn't really multitask anyhow, so it was pretty much fine.

-----Original Message-----
From: TUHS [mailto:tuhs-bounces at minnie.tuhs.org] On Behalf Of Ian Zimmerman
Sent: Monday, February 26, 2018 11:58 AM
To: tuhs at minnie.tuhs.org
Subject: Re: [TUHS] EOF on pipes?

On 2018-02-26 23:03, Rudi Blom wrote:

> From a piece of code I have in some SCO UNIX 3.2V4.2 source. SCO 
> doesn't have pipes, but you can simulate them.

Is this a SCO speciality, or are there other UNIXes like that?

Does it not even have pipe() in its libc?	

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