I know they have no code in common. I'm talking about the fact that both were multitasking from the beginning. You're talking about specific early shell behavior. Nothing to do with capabilities of kernel which provided multitasking for two terminals at once.
Processes (independently executing entities) existed very early in PDP-7 Unix. There were in fact precisely two of them, one for each of the two terminals attached to the machine.
Processes (independently executing entities) existed very early in PDP-7 Unix. There were in fact precisely two of them, one for each of the two terminals attached to the machine.
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.156...