I read a similarly themed koan recently where the novice wants to do various things with the shell, and the master tells him that's not what shell is for, and a

I read a similarly themed koan recently where the novice wants to do various things with the shell, and the master tells him that's not what shell is for, and at the end the novice proposes something in exasperation which is essentially to use pipes to combine a bunch of commands, and the master say yes, use shell for that. I may be getting parts of it wrong. Csn anyone point me to this one? I can't find it.