sudo apt-get update
[sudo] password for user: 
Hit:1 http://gr.archive.ubuntu.com/ubuntu xenial InRelease                     
Hit:2 http://gr.archive.ubuntu.com/ubuntu xenial-updates InRelease             
Hit:3 http://gr.archive.ubuntu.com/ubuntu xenial-backports InRelease           
Get:4 http://security.ubuntu.com/ubuntu xenial-security InRelease [94,5 kB]    
Fetched 94,5 kB in 2s (32,8 kB/s)