Run grep denied /var/log/auth.log.
grep denied /var/log/auth.log
Mission 192
Capstone log sweep
Sweep auth, nginx, and package logs for evidence.
Capstone labsgreptail
Lesson 192 of 360
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Capstone labs · 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 tail -n 2 /var/log/nginx-error.log.
tail -n 2 /var/log/nginx-error.log
Run grep upgrade /var/log/dpkg.log.
grep upgrade /var/log/dpkg.log
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Lesson support
What to notice while you play.
Sweep auth, nginx, and package logs for evidence.
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.