Linux CLI - System Administration
What does the command
tail -f /var/log/auth.log do?What does the command tail -f /var/log/auth.log do?
medium📝 Command Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand tail -f option
tail -fshows the last part of a file and keeps the output open to show new lines as they are added.Step 2: Differentiate from other options
It does not display the entire file once, delete lines, or search for characters.Final Answer:
Shows the last lines of auth.log and updates live as new lines are added -> Option AQuick Check:
tail -f = live follow last lines [OK]
Quick Trick: Use tail -f to watch logs update live [OK]
Common Mistakes:
- Thinking tail -f deletes lines
- Assuming it shows entire file once
- Confusing tail -f with grep
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