System[.Posix].Process question

[Johannes Waldmann]

Hello.

I am looking for something like System.Process.runInteractiveProcess
(which gives me the in/out/err handles, which I like) but instead of 
ProcessHandle,
I want a System.Posix.Types.ProcessID because I want to send a specific 
signal later.
It seems that to a ProcessHandle I can only send SIGKILL
(via System.Process.terminateProcess), and this is bad
because the target process cannot intercept and handle it.
In my case, it needs to cleanup (namely, kill its children).

Thanks, J.W.

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