The answer is to change 'exit 1' to 'exit 0'. This is because in Linux and Unix systems, script exit codes are the primary way a script communicates its execution status to the shell or calling process: an exit code of 0 universally indicates success, while any non-zero value, including 1, signals a failure or error condition. On the CompTIA Linux+ XK0-005 exam, this concept is frequently tested in questions about script debugging and process management, often as a trap where a script runs without visible errors but uses the wrong exit code, leading administrators to misinterpret the result. A common memory tip is to think of zero as representing "zero errors" or a clean exit, while any positive number points to a specific problem. Remember: in the world of exit codes, 0 is the hero, and everything else is a villain.
XK0-005 Scripting, Containers and Automation Practice Question
This XK0-005 practice question tests your understanding of scripting, containers and automation. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
#!/bin/bash
# Script to print system info
system_info=$(uname -a)
echo "System: $system_info"
exit 1
The script in the exhibit runs successfully but the administrator expects it to indicate success. What change should be made?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change 'exit 1' to 'exit 0'
The script uses 'exit 1' to terminate, which indicates a failure or error condition to the shell. The administrator expects the script to indicate success, so the exit code must be changed to 'exit 0', which is the standard Unix/Linux convention for successful execution. Exit codes are how scripts communicate their status to the calling process, and only exit 0 means success.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Replace $system_info with just system_info
Why it's wrong here
Would print literal string instead of variable.
✓
Change 'exit 1' to 'exit 0'
Why this is correct
Zero exit code indicates success.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the variable name to SYSTEM_INFO
Why it's wrong here
Does not affect exit code.
✗
Change 'exit 1' to 'exit 0' and remove the quotes around $system_info
Why it's wrong here
Quotes are fine, but removing them could cause word splitting issues.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the fundamental distinction between exit codes 0 and 1, where candidates may mistakenly think that 'exit 1' is correct for a successful script or that variable naming or quoting affects the exit status.
Detailed technical explanation
How to think about this question
In Linux shell scripting, exit codes range from 0 to 255, where 0 indicates success and any non-zero value indicates an error or abnormal termination. The 'exit' command immediately terminates the script and passes the specified code to the parent process, which can be checked via the $? variable. This is critical in automation and scripting contexts, such as CI/CD pipelines, where a non-zero exit code can halt a deployment or trigger failure alerts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this XK0-005 question in full detail.
Scripting, Containers and Automation — This question tests Scripting, Containers and Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Change 'exit 1' to 'exit 0' — The script uses 'exit 1' to terminate, which indicates a failure or error condition to the shell. The administrator expects the script to indicate success, so the exit code must be changed to 'exit 0', which is the standard Unix/Linux convention for successful execution. Exit codes are how scripts communicate their status to the calling process, and only exit 0 means success.
What should I do if I get this XK0-005 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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