OT: processes, terminals and file descriptors on *nix (was: Re: attach to process by pid?)

[Alexander Kapps]

On 11.03.2011 03:18, Nobody wrote:
> On Thu, 10 Mar 2011 23:55:51 +0100, Alexander Kapps wrote:
>
>>>> I think he wants to attach to another process's stdin/stdout and
>>>> read/write from/to them.
>>>> I don't know if this is possible but it would be a great addition for
>>>> psutil.
>>>
>>> It's not even a meaningful concept, let alone possible.
>>
>> Unless I misunderstand something,
>
> You do ...

Many thanks for the correction and lesson (to Grand Edwards too)!

I still try to digest your explanations. I thought, that processes 
just do something like dup()'ing the file descriptors of their 
terminal but after some strace experiments, I think that is totally 
wrong.

I'd like to learn more about this (how processes, their controlling 
terminals and the std file descriptors relate)

Do you know any links to deeper material (tried Google but what I've 
found is to shallow)