apt
PackagesPackage: apt
The package management interface for a human: update, upgrade, install, with a progress bar and output that changes between versions — which makes it unfit for scripts.
What its options do in the lessons
From the same glossary the lessons render under their commands, so the two cannot disagree.
apt -y- Answers yes to every prompt. Needed for an unattended install; avoid it when the command could remove packages.
apt --upgradable- With
apt list, shows only packages with a newer version available.
Lessons that teach it
- Updating a server with aptYour first server
- Installing and removing softwareYour first server
- Dropped here or never arrived: one capture decidesNetworking: how your server is reached
- Rebuilding the whole machine, in the right orderBackups and restores
- Which disk, and how long each request tookMonitoring a server