No, each time you do 
    my $pid = open(my $child, "-|") // die "Fork failed: $!";

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you fork, and get a different pipe (there will be a pipe for each child).

You might want to look in the "Safe Pipe Opens" section of the perlipc manual page for example code, and a description on how to open a pipe between a parent and a child.

In reply to Re^3: Forking Problem by JavaFan
in thread Forking Problem by smithgw

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