sudo nano /etc/hostname
somestupidhostname
change to:
somesmarthostname
To verify the change:
hostnamectl
Or you can do it via set-hostname:
hostnamectl set-hostname somesmarthostname
To apply the change immediately:
newgrp

very very slowly
sudo nano /etc/hostname
somestupidhostname
change to:
somesmarthostname
To verify the change:
hostnamectl
Or you can do it via set-hostname:
hostnamectl set-hostname somesmarthostname
To apply the change immediately:
newgrp