Mission 219

Access log triage

Search access logs for status and route signals.

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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.

Find 404s

Run grep 404 /var/log/nginx-access.log.

grep 404 /var/log/nginx-access.log
Find rotated successes

Run grep 200 /var/log/nginx-access.log.1.

grep 200 /var/log/nginx-access.log.1
Count access log

Run wc -l /var/log/nginx-access.log.

wc -l /var/log/nginx-access.log
Lesson support

What to notice while you play.

Objective

Search access logs for status and route signals.

Hint

Run the commands in order and compare the outputs.

Why it matters

Junior operators build confidence by gathering evidence before changing systems.

Common mistakes
  • 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.

wc [-l] <file>

Count lines, words, and characters.