Run diff /var/log/nginx-access.log /var/log/nginx-access.log.1.
diff /var/log/nginx-access.log /var/log/nginx-access.log.1
Mission 324
Rotated access comparison
Compare active and rotated access logs before summarizing traffic.
Text and logsdifftailnl
Lesson 324 of 360
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0/17 missions
Text and logs · 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-access.log.1.
tail -n 2 /var/log/nginx-access.log.1
Run nl /var/log/nginx-access.log.
nl /var/log/nginx-access.log
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Lesson support
What to notice while you play.
Build repeatable confidence with comparing current and rotated log evidence.
Start with diff /var/log/nginx-access.log /var/log/nginx-access.log.1, inspect the result, then continue in order.
Comparing current and rotated log evidence helps operators explain what they know before they change anything.
- Skipping the output that proves comparing current and rotated log evidence.
- Changing several things before recording a baseline.
Reference
Commands in this lesson.
diff <left> <right>
Compare two lab text files.
nl [file]
Number lines from a file or supported text pipeline.