Ubuntu 13.10 vs 12.04 LTS
14506
What's the difference between a Long Term Support Release and a Normal Release?
75133
Is the latest version of Ubuntu 100% FREE
16526
Should I upgrade to the "mainline" kernels?
56282
16.04 LTS upgrade alert- How to handle it?
133193
Can I install Ubuntu 12.04 LTS on a PC with no OS?
50553
Can I mix sources from different ubuntu versions?
18912
How come Ubuntu 18.04 LTS has a 32bit iso installer?
2236
Why don't the Ubuntu repositories have the latest versions of software?
91210
Why does Ubuntu only support versions for a limited time (and what does it mean)?
20399
How do I upgrade from 14.04 LTS to 16.04.1 LTS?
142825
Why my ubuntu 16.04 LTS suddenly become very slow?
125004
Do I have 32-bit or 64-bit?
92107
Is there a 32-bit version of Ubuntu 18.04 desktop?
7580
How to safely upgrade from an older Ubuntu version to a newer one?
153774
Upgrade to Ubuntu 13.10 from ISO image
65161
What is the difference between Ubuntu+XFCE and Xubuntu?
97964
CentOS difference between version