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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 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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