apt

Table of Contents

1. Removed packages with configuration files left

List of all removed packages that may have configuration files left on the system (if any) 

apt list '~c'

Assuming you want to purge all of them in one go, you can use the following command 

apt purge '~c'

2. Removing obsolete and locally created packages

List of all “Obsolete and Locally Created Packages” can be listed and purged with these commands 

apt list '~o'

Assuming you want to purge all of them in one go, you can use the following command 

apt purge '~o'

3. List packages not coming from Debian origin

apt list '?narrow(?installed, ?not(?origin(Debian)))'

4. Check for updates without warnings

apt -qq list --upgradeable

5. List of upgradable packages

apt list '~U'

6. Install package from stable

apt install linux-image-amd64/stable

7. Install package from backports

See notes:debian#backports 

apt install linux-image-amd64/trixie-backports

8. Related nodes

9. References