APT -- Advanced Package Tool -- is all that is needed for most application installations when there are repositories which are regularly updated for packages of interest.
apt essentially makes irrelevant
apt-get so there is no reason for that redundancy any longer.
aptitude when dealing with packages that have upgrade/downgrade issues, as
aptitude provides better options for resolving issues. Use the
-f flag with
aptitude if the downgrading is out of hand.
Additional Note: Use
aptitude to install
.deb packages including the
packagename, as in:
sudo apt install -y ./packagename
stable, backports, testing, unstable repos
For a stable system, using
oldstable) and backports ensures stability. However, it doesn't deal with new hardware issues, or any kind of additional functionality, such as adding updated applications. For this, it is a matter of tracking down external packages, or using the
Note that mixing repos is discouraged by debian and may result in breakage. See also choosing a distribution.
Currently, my main desktop is tied to an
oldstable release to keep an older printer working properly.
I do expect to be running Debian 9, Debian 10, and Debian 11 more or less parallel (backup desktop, server, primary desktop).
Upgrading the linux kernel using apt
sudo apt update -y
sudo apt update -y -t stretch-backports
sudo apt upgrade -y --fix-missing
sudo apt upgrade -y -t stretch-backports --fix-missing
sudo apt install -f
Upgrade Distributon (e.g, Debian Stable)
sudo apt dist-upgrade -y --fix-missing
Clean, Autoclean, Check, Autoremove
All these commands can be run from apt. In particular,
autoremove is a good option to keep things tidy.
sudo apt autoremove -y
Purge and Remove
To seriously remove things, do:
sudo apt --purge remove package-name
Sources are found in a few places:
sudo nano /etc/apt/sources.list
Note: mixing repositories is not needed. Oldstable for backup desktop, stable for servers, testing for primary desktop.