Yep, you login there with root (logging in as root means you don’t need the first “sudo su” command) or as mc followed by elevating yourself to root from there (using “sudo su”), and then run the remaining 2 commands.
Also feel free to checkout this tutorial if you wish for a bit more context: [Tutorial] Installing MineOS-Node on a Ubuntu/Debian based distribution with a GUI (WiFi included, covers a range of some basics)