Michael Kukat writes:

>This is a bit strange, as i used the echo of the IRIX ksh, and this is the
>same effect of all the other commercial OSes ksh versions, which i just think

All commercial systems which come with ksh normally use System V
semantics...

>I never saw the case of a shell using the external things first, ignoring the
>builtins. If you want to use the external program, you just give the path
>with it, what should you do to explicitly use the builtin version? All the
>shells i know first use the builtins before using external stuff with the same
>names...

Yes, the shell configures itself at compile time so that the behaviour
of the builtin matches that of the system's external command (it's
basically a decision if you're running in a SV or BSD environment.)

--mkb