Finally, i have guessed how i did forking so that if flawlessly worked. But that part was done together w/ BaSh -- so no interest for the question in PERL here, I tried hard w/ PERL to do forking the way i wanted -- but gave up w/ PERL, in favour of BaSh.

Thank you for all, who participated! I close my question here.

In reply to Re^7: To organize pipe right way. by nikolay
in thread To organize pipe right way. by nikolay

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