kazulog@webserver:~$ hostnamectl | head -3
 Static hostname: webserver
 Pretty hostname: Kazulog Web Server
       Icon name: computer-vm
kazulog@webserver:~$ hostname
webserver
kazulog@webserver:~$ cat /etc/hostname
webserver
kazulog@webserver:~$ grep 127.0 /etc/hosts
127.0.1.1 ubuntu sv1
127.0.0.1 localhost