− upgrade operating system to latest release
operating system to the latest release from the
command−line. This is the preferred command if the
machine has no graphic environment or if the machine is to
be upgraded over a remote connection.
show help message and exit
If using the latest supported
release, upgrade to the development release
Try upgrading to the latest
release using the upgrader from Ubuntu−proposed
Run in a special upgrade mode.
Currently "desktop" for regular upgrades of a
desktop system and "server" for server systems are
Run the specified frontend
Test upgrade with a sandbox