apt-get upgrade: why is lxc-docker being kept back?
16736
"The following packages have been kept back:" Why and how do I solve it?
135107
Openssl upgraded via apt-get, `openssl version` showing previous version
94942
How to update libavcodec on ubuntu 14.04?
100141
Is there any "official" guidance to upgrading from Lubuntu 18.04 LTS (LXDE) to Lubuntu 18.10 (LXQt)
59119
apt-get, unmet dependencies, ... "but it is not going to be installed"
100963
How to only perform LTS upgrades?
83216
apt get update missing release file
123413
Will apt-get dist-upgrade upgrade my system to a newer version?
127766
how to upgrade my Debian package with minor changes
16753
Why should I regularly run 'apt-get update' and similar commands?
113026
What happened to /etc/apt/apt.conf?
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
66915
How to request a package upgrade in the next Ubuntu release
75824
Seeing apt-get changelogs for to-be-upgraded packages
113145
What does 'apt-get install update' do?
23096
How to remove obsolete packages after failed release upgrade via do-release-upgrade on Ubuntu?
21382
What does "sudo apt-get update" do?