Systemd reads /etc/hostname to
determine which hostname should be set.
Create the /etc/hostname file and enter
a hostname by running:
echo "[clfs]" > /etc/hostname
[clfs] needs to be replaced
with the name given to the computer. Do not enter the Fully Qualified
Domain Name (FQDN) here. That information will be put in the
/etc/hosts file in the next section.