[xatrix@SYSADMIN-NB ~]$ sudo apt update
Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
Hit:3 http://archive.canonical.com/ubuntu xenial InRelease
Ign:4 http://archive.canonical.com precise InRelease
Hit:5 http://archive.canonical.com precise Release
Get:6 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB]
Get:8 http://archive.ubuntu.com/ubuntu xenial-security InRelease [107 kB]
Fetched 323 kB in 1s (241 kB/s)
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)
[xatrix@SYSADMIN-NB ~]$