Why does apt-get upgrade only return "The following packages have been kept back: python3-psycopg2" while apt update shows it can be upgraded (how)?
55591
What does "The following packages have been kept back" mean?
110148
Why does `do-release-upgrade` skip a version?
107009
ubuntu 18.04 apt-get upgrade problem "redirection loop encountered."
44209
Problem with update-manager: No module named 'apt_pkg' in Ubuntu 13.10, having installed Python 3.4 on /usr/local/lib
155179
How to get apt-cacher-ng to download AND cache packages from Apt HTTPS repositories?
5820
How to fix the “Unable to calculate upgrade” issue from command line when upgrading from 12.04 to 14.04?
121201
Why can't I update applications without upgrading the whole OS?
47013
What is the difference between dpkg and aptitude/apt-get?
54596
I run `sudo apt-get remove python2.7`, can I restore my Ubuntu now?
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
73525
Do old package versions in CentOS mean that they do not have security fixes?
145400
Error when trying sudo apt-get update - Python related?
155198
What is the difference between the "jessie" and "jessie-updates" distributions in /etc/apt/sources.list?
12379
How do I install Python 3.6 using apt-get?
67461
How can I find the version number of an installed package via dpkg?
23031
Difference between apt-get -d install & apt-get download