Why security updates not included in apt-get repository?
23713
What is "dist-upgrade" and why does it upgrade more than "upgrade"?
155198
What is the difference between the "jessie" and "jessie-updates" distributions in /etc/apt/sources.list?
46155
What does apt-get install do under the hood?
80899
"no public key available" on apt-get update
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
122588
Can't connect to ubuntu archive when using apt-get update
16186
Requires installation of untrusted packages?
108510
apt-get update very slow, stuck at "Waiting for headers"
21382
What does "sudo apt-get update" do?
511
How to enable silent automatic updates for any repository?
73525
Do old package versions in CentOS mean that they do not have security fixes?
43917
What is the difference between apt-get update and upgrade?
5830
How to prevent updating of a specific package?
100494
Update Manager asking me to update kernel but apt-get upgrade does not?
65
What can I do if a repository/PPA does not have a Release file?
83216
apt get update missing release file
16753
Why should I regularly run 'apt-get update' and similar commands?