Linux CLI - System Administration
You want to monitor live logs from the
docker.service as they happen. Which command should you use?You want to monitor live logs from the docker.service as they happen. Which command should you use?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Identify option for live log streaming
The-foption in journalctl streams new log entries live, similar to tail -f.Step 2: Evaluate other options
journalctl -u docker.service --since now shows logs since now but does not follow live updates. journalctl -u docker.service -n 0 shows zero lines, so no output. journalctl -u docker.service --no-pager disables paging but does not stream live.Final Answer:
journalctl -u docker.service -f -> Option BQuick Check:
-f = follow live logs [OK]
Quick Trick: Use -f to follow logs live like tail -f [OK]
Common Mistakes:
- Using --since now without -f for live updates
- Using -n 0 which shows no lines
- Confusing --no-pager with live streaming
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