Linux CLI - File Permissions and Ownership
Given the permission notation
rw-r-----, what is the numeric (octal) equivalent?Given the permission notation rw-r-----, what is the numeric (octal) equivalent?
medium📝 Command Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Convert owner permissions 'rw-'
'r' = 4, 'w' = 2, '-' = 0, total 6.Step 2: Convert group permissions 'r--'
'r' = 4, '-' = 0, '-' = 0, total 4.Step 3: Convert others permissions '---'
No permissions = 0.Final Answer:
640 -> Option BQuick Check:
Owner=6, Group=4, Others=0 [OK]
Quick Trick: Sum read(4), write(2), execute(1) per group [OK]
Common Mistakes:
MISTAKES- Swapping group and others values
- Miscounting permissions
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