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A comment on Pipe Logic – Simulating circuits in the Unix shell (2011). Parent comment

Re:Pipe Logic – Simulating circuits in the Unix shell (2011) by PeachPlum on Saturday September 30, 2017 @06:05AM (#15372114)
The pipe | symbol came in 1972 [1], fork was 1971 [2]

So I doubt it

[1] http://www.softpanorama.org/Scripting/pipes.shtml

[2[ https://www.bell-labs.com/usr/dmr/www/pdfs/man21.pdf

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Re:Pipe Logic – Simulating circuits in the Unix shell (2011) by akkartik on Saturday September 30, 2017 @11:13PM (#15376158)
`fork()` in the kernel is a prerequisite for `&` in the shell, but not the same thing. Another sample point: job control first came to shells in 1981 (http://gunkies.org/wiki/4.1_BSD). Perhaps '&' too originated then?
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