ADMIN.md



Administrating system-wide Debian packages
Tools

apt - for interactive simple command-line tasks
apt-get - for scripted tasks
aptitude - for fullscreen browsing and complex tasks

System upgrade
Make sure your current system is up-to-date:


Check /etc/apt/sources.list* files that only current release is used.


Update and upgrade:
apt update; apt upgrade


Make sure that all auto-installed packages are marked as such:


Start aptitude in fullscreen mode:
aptitude -u


Check each installed package: Flag as auto-installed as appropriate


Remove no longer used packages as needed (press "g" twice).


Double-check packages unneeded for or alien to current release:


Compute package lists:
localbackuppkglists


locate and inspect aliens and explicits below /etc//localpkglists.