@William probably not without something practical to solve.

However, It might be an interesting piece of folklore or just something banal.

I used to be able to do this sudo dd if='/path/to/Install_macOS_Lion.iso' of=/dev/sdd bs=4M. Not anymore because they are dmgs. Without 3rd party software what is the easiest way to accomplish the same thing today with the dmgs?

Just to clarify that creates a bootable usb thumb drive.