I'm trying to understand how Ubuntu's default package manager works under the hood. Specifically, how does it resolve package dependencies during installation, and what process keeps system updates consistent without breaking existing software? Also, are there any best practices for manually installing or removing packages to maintain system stability? I'd love to hear your explanations and any tips you use in your daily workflow.
How does Ubuntu's default package management handle dependencies and updates?
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When I first upgraded from Ubuntu 16.04 to 20.04, apt automatically pulled in all required libraries and marked old ones for removal, so the system stayed consistent without any broken packages. My habit now is to let apt handle installs/removals, run `sudo apt update && sudo apt full-upgrade` regularly, and avoid mixing `dpkg -i` with manual dependency fixes unless I double‑check with `apt -f install`.