Use resource commands as read-only health checks.
Mission 22
Resource inspection
Read fake disk, memory, uptime, and directory usage signals.
Server operations
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Lesson support
What to notice while you play.
Run df -h, du -sh /var/log, free -h, and uptime.
Capacity issues often explain service symptoms.
- Checking services but not disk.
- Ignoring uptime after a suspected reboot.
Reference
Commands in this lesson.
df|du|free|uptime
Inspect fake resource and system health.