XK0-006 System Management Practice Question
A Linux administrator wants to search for all occurrences of the word 'ERROR' in log files under /var/log, ignoring case, and also print the line numbers. Which command should be used?
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
✓
grep -rin 'ERROR' /var/log
grep -rin 'ERROR' /var/log searches recursively, ignores case, and prints line numbers. -i for case-insensitive, -n for line numbers, -r for recursive.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
grep -vi 'ERROR' /var/log
Why it's wrong here
-v inverts match, showing lines without ERROR.
- ✓
grep -rin 'ERROR' /var/log
Why this is correct
Correct: -r recursive, -i ignore case, -n line numbers.
- ✗
grep -rn 'ERROR' /var/log
Why it's wrong here
Missing -i, so case-sensitive.
- ✗
find /var/log -name '*ERROR*'
Why it's wrong here
find searches file names, not file contents.
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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.