I installed Ubuntu for the first time a few days ago and it all went smoothly. However in the terminal, there always is one letter missing from my username. I checked in my settings but there it shows my correct name.
whoami returns mbra and echo $HOME returns mbra as well.
I know its not a major issue but it would feel a lot better if I was able to fix this. In the following image, it's supposed to read umbra twice:

id -un– steeldriver Oct 20 '21 at 14:59mbra. You have to log out and either login asrootin the TTY, or restart the computer in the recovery mode and use the commands. – user68186 Oct 20 '21 at 20:39