Hi,
Does anyone knows how a pipe between processes is implemented by
UNIX shells?
I think that lauching all processes at the same time and piping
one to another is an extreme waste of resources. And I know that MS-DOS
and MSXDOS2 have pipes and they are monotask OSs.
For example:
cat fudeba.txt | head 20 | tail 10 | less
What is the (best) approach? I think that making 4 fork()/exec()
is an extreme waste of system resources. And I don't know how making the
pipe in a serialized way.
I tried to understand the code of the clam shell, but I couldn't. :P
[btw, it's not off-topic. it's related to UZIX, even if some
people doesn't like it]
Thanks,
Adriano Camargo Rodrigues da Cunha ([EMAIL PROTECTED])
Engenharia de Computacao - UNICAMP
http://www.adrpage.cjb.net http://if.you.dont.like.msx.usuck.com
* Bug (n) Technology originally developed by Microsoft in the 1980s. *
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