root@tt-sl-u16-10:~# sudo apt update && sudo apt full-upgrade
sudo: unable to resolve host tt-sl-u16-10
Hit:1 http://ppa.launchpad.net/ansible/ansible/ubuntu xenial InRelease
Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [107 kB]
Hit:3 http://azure.archive.ubuntu.com/ubuntu xenial InRelease
Get:4 http://azure.archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
Get:5 http://azure.archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB]
Hit:6 https://download.docker.com/linux/ubuntu xenial InRelease
Fetched 323 kB in 1s (202 kB/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
sudo: unable to resolve host tt-sl-u16-10
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@tt-sl-u16-10:~# uname -a
Linux tt-sl-u16-10 4.4.0-133-generic #159-Ubuntu SMP Fri Aug 10 07:31:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux