[xatrix@SYSADMIN-NB ~]$ sudo  sudo apt update && sudo apt full-upgrade
Hit:1 http://archive.canonical.com/ubuntu xenial InRelease
Ign:2 http://archive.canonical.com precise InRelease
Hit:3 http://ubuntu.org.ua/ubuntu xenial InRelease
Hit:4 http://ubuntu.org.ua/ubuntu xenial-updates InRelease
Hit:5 http://archive.canonical.com precise Release
Hit:6 http://ubuntu.org.ua/ubuntu xenial-backports InRelease
Hit:7 http://ubuntu.org.ua/ubuntu xenial-security InRelease
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: http://archive.canonical.com/dists/precise/Release.gpg: Signature by key 630239CC130E1A7FD81A27B140976EAF437D05B5 uses weak digest algorithm (SHA1)
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.