That's all needlessly complicated. If you're using the latest Amiga Shell, and make it resident with "LoadModule", then insert the following line on top of the startup-sequence: set interactive on
Afterwards, the Shell will prompt each command, and will ask you to confirm its execution. If you enter a "Y" or press return, the command is executed. If you press "N", the command is skipped. If you press "Q" the shell will return to normal execution.
many thanks Thomas! I totally forgot about that useful command line & it'll come in handy for me now as I battle with my 1200T & mediator:)