[Solved] You run sort data.txt | uniq but notice duplicates remain. What is the most likely cause? — Ans: The file contains lines with trailing spaces or tabs | Linux CLI

Linux CLI - Text Processing

You run sort data.txt | uniq but notice duplicates remain. What is the most likely cause?

Asort command does not work on text files

Buniq command is misspelled

CThe file contains lines with trailing spaces or tabs

DThe file is empty

Step-by-Step Solution

Solution:

Step 1: Understand how sort and uniq treat whitespace
sort and uniq treat lines with trailing spaces or tabs as different lines, so duplicates with extra spaces won't be adjacent identical.
Step 2: Check other options
uniq misspelling would cause error, not duplicates remaining. sort works on text files. Empty file means no duplicates.
Final Answer:
The file contains lines with trailing spaces or tabs -> Option C
Quick Check:
Trailing spaces cause uniq to miss duplicates = C [OK]

Quick Trick: Check for trailing spaces if duplicates remain after sort|uniq [OK]

Common Mistakes:

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You run sort data.txt | uniq but notice duplicates remain. What is the most likely cause?