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In the numeric permission mode 755, what does the last digit 5 represent?

easy📝 Conceptual Q2 of 15
Linux CLI - File Permissions and Ownership
In the numeric permission mode 755, what does the last digit 5 represent?
ARead and write permissions for others
BRead and execute permissions for others
CWrite and execute permissions for others
DFull permissions for others
Step-by-Step Solution
Solution:

  1. Step 1: Decode the last digit in 755

    The last digit '5' represents permissions for others. 5 = read (4) + execute (1).

  2. Step 2: Understand what 5 means for others

    Others can read and execute, but not write.

  3. Final Answer:

    Read and execute permissions for others -> Option B

  4. Quick Check:

    Others permissions 5 = read + execute [OK]
Quick Trick: 5 means read (4) + execute (1) for others [OK]
Common Mistakes:
  • Assuming 5 includes write permission
  • Mixing group and others permissions

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