How can you combine Linux file reading with scripting to efficiently process only new lines appended to a log file?

hard📝 Application Q9 of 15

Linux CLI - Viewing and Editing Files

AUse <code>cat</code> repeatedly on the entire file

BDelete the file after each read

CCopy the file and read the copy each time

DUse <code>tail -f</code> to read appended lines in real-time

Step-by-Step Solution

Solution:

Step 1: Identify command for new appended lines
tail -f follows a file and outputs new lines as they appear.
Step 2: Compare other options
Repeatedly reading entire file or copying wastes time; deleting loses data.
Final Answer:
Use tail -f to read appended lines in real-time -> Option D
Quick Check:
tail -f = efficient new line reading [OK]

Quick Trick: Use tail -f to watch new file lines live [OK]

Common Mistakes:

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