Run systemctl status nginx.
systemctl status nginx
Mission 293
Incident evidence bundle
Collect service, log, and network evidence in one drill.
Troubleshootingsystemctlgrepsstee
Lesson 293 of 360
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Troubleshooting · 8 minutes
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learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
8 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run grep 404 /var/log/nginx-access.log.
grep 404 /var/log/nginx-access.log
Run ss -tulpn | tee lab/incident-listeners.txt.
ss -tulpn | tee lab/incident-listeners.txt
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Lesson support
What to notice while you play.
Collect service, log, and network evidence in one drill.
Run the commands in order and compare the outputs.
Junior operators build confidence by gathering evidence before changing systems.
- Skipping the inspection step.
- Assuming one command tells the whole story.
Reference
Commands in this lesson.
grep [-i] <text> <file>
Find literal text inside a file.
tee <file>
Write piped text to a lab file and keep it on screen.
systemctl status <service>
Inspect simulated service status.
ss|ip
Inspect simulated sockets and addresses.
ssh|scp|ssh-keygen
Practice SSH inspection and dry-run transfer shapes without network access.