Re: Forground process and background process

[Bijoy Jacob Thomas <bijoyjth@xxxxxxxxx>]

I dont think the kernel makes any distinction between foreground or 
background processes. Its just something that it maintained by the 
shell. When you run a program in the background by ./program &, you are 
telling the shell to fork and exec the program but not to wait() on it 
and return. Now, when you use the jobs command to see the background 
processes, i believe the shell looks up its internal structures to find 
out what processes it started in the background. jobs is a built-in 
shell command.

Oh yeah, the shell also detaches the background process from a terminal 
( so hitting a Ctrl-C will not send a signal to it).

Regards,
Bijoy.

On Nov 20, 2004, at 10:41 PM, Manish Regmi wrote:

> hi all,
> Can anybody tell me how does Linux Kernel identifies between the
> background and foreground process?
>
> Thanks in Advance.
>
> --
> Manish Regmi
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
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