apt-get upgrade returning errors because Python3 and HPLIP Ubuntu 18.04
23529
How to install latest HPLIP on my Ubuntu to support my HP printer and/or scanner?
13720
apt-get update fails to fetch files, “Temporary failure resolving …” error
113442
apt-get not working on Ubuntu 16.04, problems with kernel packages
93246
How to resolve conflicting distributions in apt-get
35146
Will apt-get dist-upgrade upgrade my system to newer version?
6833
Why is my Ubuntu 18.04 distribution asking me to upgrade to Pop!_OS 19.10?
64287
How do I install Python 3.7 on Ubuntu 16.04 and 18.04?
72082
Is using Software Updater the same thing as running apt-get update and apt-get upgrade?
41519
What can I do if a package is not available on the newest version of Ubuntu (18.04) but is available on older versions?
11166
"Require Installation Of Untrusted Packages" while upgrading with the update manager
96696
timeout errors in apt-get update/install
12368
A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
60659
Install newer package version from trusty-backports
147407
Apt-get fails on 16.04 or 18.04 installing mongodb
84537
Using dpkg to install upgrade and dist-upgrade packages
1520
How to install software or upgrade from an old unsupported release?
82481
How do you install python3.7 to ubuntu 20.04?