What are all the versions focal, focal-updates, focal-backports, focal-proposed, focal-security ..in http://ports.ubuntu.com?
8819
What is the difference between security, updates, proposed and backports in /etc/apt/apt.conf.d/50unattended-upgrades?
30531
What version of Ubuntu should I pick?
140914
How to update HPLIP in ubuntu 16.04?
29374
How to detect if a USB port is 3.0 or 2.0?
107149
Is the current version of Ubuntu usable on a PPC mac?
72215
What are the fundamental differences between the mainstream *NIX shells?
34999
What are point releases in LTS versions?
140567
Supported Hardware List
74079
How to Upgrade Ubuntu 12.04.2, 12.04.3 to 12.04.4, the next Hardware Enablement Stack?
72756
What is the difference between the *.ubuntu.com wikis?
143747
How do I enable the "backports" repository?
88000
What is a "viewport"? What about a "workspace"?
21136
How to know what program is listening on a given port?
50921
What are the browser and resolution stats for SO users?
110801
Are there Ubuntu security notices feeds for specific releases
34373
Where can I get the latest Ubuntu Alpha or Beta?
24643
What is the difference between Ubuntu and its derivatives?