XK0-006 System Management Practice Question
A user reports that a script in /home/user/script.sh fails to execute. The output of 'ls -l script.sh' is '-rw-r--r-- 1 user user 1024 Apr 1 10:00 script.sh'. Which command should be used to make the script executable for all users?
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
✓
chmod a+x script.sh
The file is currently not executable (rw-r--r--). To add execute permission for all users, use chmod a+x or chmod +x.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
chmod 644 script.sh
Why it's wrong here
644 sets permissions to rw-r--r--, which does not include execute.
- ✓
chmod a+x script.sh
Why this is correct
Correct: a+x adds execute permission for all users (owner, group, others).
- ✗
chmod u+x script.sh
Why it's wrong here
This adds execute only for the owner, not all users.
- ✗
chmod 755 script.sh
Why it's wrong here
755 sets rwxr-xr-x, which adds execute for all, but it also changes other permissions unnecessarily. a+x is more precise.
Go deeper
Related to this question
Learn chapter
File Permissions and Ownership
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.
Key term
Output
In IT service management, output is the result or deliverable produced by a process, system, or component, such as data, reports, or services delivered to a customer.
About these practice questions
This XK0-006 question is part of Courseiva's 979-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XK0-006 exam.