Linux CLI - Viewing and Editing Files
Given a file
data.log with 50 lines, what will be the output of head -n 5 data.log | tail -n 3?Given a file data.log with 50 lines, what will be the output of head -n 5 data.log | tail -n 3?
medium📝 Command Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the first command
This outputs the first 5 lines of the file.head -n 5 data.logStep 2: Understand the pipe to
This takes the last 3 lines of the previous output, which are lines 3, 4, and 5 of the file.tail -n 3Final Answer:
Lines 3 to 5 of data.log -> Option CQuick Check:
Pipe head then tail = last lines of first lines [OK]
Quick Trick: Pipe head then tail to get middle lines from start [OK]
Common Mistakes:
- Assuming tail applies to whole file
- Confusing line numbers
- Ignoring pipe effect
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