Telling what changed on disk
dpkg -V, debsums and AIDE: what a machine can tell you about its own files, the large share it never looks at, and why an empty report is not proof.
22 minutesTechnical content last reviewed on 16 Sept 2026
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What this lesson builds
- Reading system state without over-reading it
- Saying what an output proves, and what it leaves open
- Knowing what the machine exposes, and closing the rest
End of the course
Monitoring a server
Read disk, memory and load correctly, control log growth, and find out before your users do.
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