RE: some trivial problem with fork

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Thanks Florin. 

But my doubt still remains.

The child exits after the parent exits. So in this case the child is
inherited by init process.

I get it till here. But after the child terminates, I get the prompt back
and am not able to see it. Am able to do everything as I can do at a prompt
because it is the prompt the parent returned?

Now when the child exits, will it give the prompt back to me(along with the
stack, heap etc copies does the child get the shell too?).  If it does I
don't see it.

Finally, as the child has been inherited by init, what happens after the
child exits?

Am confused.

Thanks.
Gowri.
-----Original Message-----
From: Florin Malita [mailto:mali@go.ro]
Sent: Wednesday, March 03, 2004 6:39 PM
To: kernelnewbies@nl.linux.org
Cc: Gowri Ramasubramanian
Subject: RE: some trivial problem with fork


Your parent process exits before the child, so you get the prompt back. Then
the child prints the message/flushes buffers/exits so you get the message
showing up after the prompt.

Add a wait/waitpid call before the parent exits to make it wait for the
child result. 

Florin

-----Original Message-----
From: kernelnewbies-bounce@nl.linux.org
[mailto:kernelnewbies-bounce@nl.linux.org] On Behalf Of Gowri
Ramasubramanian
Sent: Wednesday, March 03, 2004 6:40 AM
To: kernelnewbies@nl.linux.org
Subject: some trivial problem with fork

Hi All,

I know this is very trivial. Might be am missing something out.
Have attached the code

When I run the code I get to see "hello" on stdout and then get the prompt
but am not able to see it.

What i mean is say the prompt is prompt>

prompt>./a.out
prompt>hello

I get a prompt and then see hello
and I don't see the prompt after hello.

Actually what I expect is

prompt>./a.out
helloprompt>

But if I type "ls" or anything after hello it shows the output. So it means
that the prompt is there.

What I mean is 
prompt>./a.out
prompt>helloecho hi
hi
prompt>

Hope I have been clear. Thanks.
Gowri.



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