[Help-bash] Substring Replacement

[Richard Taubo]

Hi!

On http://tldp.org/LDP/abs/html/string-manipulation.html I find the following 
example:
        stringZ=abcABC123ABCabc
        echo ${stringZ//abc/xyz}                # xyzABC123ABCxyz
                                                        # Replaces all matches 
of 'abc' with # 'xyz'.

If you are forced to run everything on one line without using variables, how
could one accomplish this, e.g:
        echo "abcABC123ABCabc" | echo ${????//abc/xyz}


Thanks for feedback!

Best regards,
Richard Taubo