Package Management Flashcards

What is the function of `apt-get -f install`?

Answer: Fixes broken package dependencies

`apt-get -f install` (fix-broken) attempts to repair a system with broken dependencies by installing or removing packages as needed.

Which command would you use to add a new Flatpak remote repository named 'flathub'?

Answer: flatpak remote-add --if-not-exists flathub

`flatpak remote-add` registers a new remote repository, and `--if-not-exists` prevents an error if it's already configured.

What does `rpm --rebuilddb` do?

Answer: Rebuilds the RPM database from installed package headers

`rpm --rebuilddb` reconstructs the RPM database files from the installed package headers, used to fix a corrupted database.

How do you prevent a specific package from being upgraded with `apt-mark`?

Answer: apt-mark hold package

`apt-mark hold package` marks a package so that `apt-get upgrade` and `apt upgrade` skip it.

Which `dnf` module command switches a module stream to a different version?

Answer: dnf module switch-to

`dnf module switch-to` changes the active stream of a module (e.g., switching PHP from 7.4 to 8.0) and updates packages accordingly.

What is the role of `/etc/yum.repos.d/` directory?

Answer: Contains repository definition files for YUM/DNF

Each `.repo` file in `/etc/yum.repos.d/` defines a repository that YUM or DNF can use to find and install packages.

Which command lists all available versions of a package in APT's cache?

Answer: apt-cache policy package

`apt-cache policy package` shows the installed version, candidate version, and all available versions with their repository priorities.