010-160 The Power OF The Command Line Practice Question
You want to replace every occurrence of 'old' with 'new' in the file 'data.txt' and view the result in the terminal. Which command achieves this?
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
✓
sed 's/old/new/g' data.txt
sed 's/old/new/g' replaces all instances of 'old' with 'new' globally in the stream.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
sed 's/old/new/g' data.txt
Why this is correct
The 's' command performs substitution with global flag 'g'.
- ✗
sed 's/old/new/' data.txt
Why it's wrong here
Without 'g', only the first occurrence per line is changed.
- ✗
grep 's/old/new/g' data.txt
Why it's wrong here
grep does not perform string substitution.
- ✗
sed 'r/old/new/g' data.txt
Why it's wrong here
'r' is the read command in sed, not substitute.
About these practice questions
This 010-160 question is part of Courseiva's 190-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 and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official LPI exam blueprint
This 010-160 practice question is part of Courseiva's free LPI 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 010-160 exam.