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Why does redirecting output to /dev/null not free up disk space?

hard📝 Conceptual Q10 of 15
Linux CLI - Pipes and Redirection
Why does redirecting output to /dev/null not free up disk space?
ABecause <code>/dev/null</code> saves data in a hidden file
BBecause <code>/dev/null</code> is a special device that discards data without storing it
CBecause output is still saved in memory
DBecause the shell buffers output before discarding
Step-by-Step Solution
Solution:
  1. Step 1: Understand what /dev/null is

    /dev/null is a special device file that discards all data written to it immediately.
  2. Step 2: Explain why no disk space is used

    Since data is discarded and not stored anywhere, no disk space is used or freed.
  3. Final Answer:

    Because /dev/null is a special device that discards data without storing it -> Option B
  4. Quick Check:

    /dev/null discards data, no storage = true [OK]
Quick Trick: /dev/null discards data instantly, no disk space used [OK]
Common Mistakes:
  • Thinking /dev/null stores data
  • Assuming output is buffered on disk
  • Confusing with temporary files

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