Don't get me wrong, seeing the layout is great if you don't mind the requirement for a GUI, but the fdisk UI is actually pretty good, too. It also queues and ex

Don't get me wrong, seeing the layout is great if you don't mind the requirement for a GUI, but the fdisk UI is actually pretty good, too. It also queues and executes a lot of changes to get to your desired state, and it can show all the sizes and offsets that define the partition layout. It's not actually a command line tool, but dialog-driven (you give it commands on-line, get built-in help, etc.).