Change hostname
To change hostname, to files needs to be updated
nano /etc/hostname
Change the text in the file to the new hostname
Also update the dns reference in /etc/hosts
nano /etc/hosts
127.0.0.1 localhost
127.0.1.1 CHANGETHIS Changethis.domain.local
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters