XK0-006 System Management Practice Question
An administrator runs the command `ls -l file.txt` and sees the permissions `-rwsr-xr-x`. What special permission is set on this file?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SUID
The 's' in the owner execute position indicates the SUID (Set User ID) permission is set.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
SGID
Why it's wrong here
SGID appears in the group execute position.
- ✗
Sticky bit
Why it's wrong here
Sticky bit appears in the others execute position.
- ✗
No special permission
Why it's wrong here
The 's' indicates a special permission.
- ✓
SUID
Why this is correct
The 's' in owner execute indicates SUID.
Go deeper
Related to this question
Learn chapter
File Permissions and Ownership
Key term
SUID
SUID (Set User ID) is a special file permission in Linux that allows a user to run an executable file with the file owner's privileges, typically root, rather than their own.
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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