[Solved] You want to create a file report.txt with exactly two lines:"Summary:""All tests passed"Which script snippet correctly creates this file with proper newlines and no extra blank lines? | Bash Scripting

Bash Scripting - File Operations in Scripts

You want to create a file report.txt with exactly two lines:
"Summary:"
"All tests passed"
Which script snippet correctly creates this file with proper newlines and no extra blank lines?

Aprintf "Summary:\nAll tests passed\n" > report.txt

Becho "Summary:" > report.txt && echo "All tests passed" > report.txt

Cecho -n "Summary:\nAll tests passed" > report.txt

Dprintf "Summary:" > report.txt && printf "All tests passed" >> report.txt

Step-by-Step Solution

Solution:

Step 1: Check echo commands in echo "Summary:" > report.txt && echo "All tests passed" > report.txt
echo "Summary:" > report.txt && echo "All tests passed" > report.txt uses echo twice with > redirection, so the second command overwrites the first line.
Step 2: Check printf commands in printf "Summary:\nAll tests passed\n" > report.txt
printf "Summary:\nAll tests passed\n" > report.txt uses printf with explicit \n for newlines, creating exactly two lines with no extra blank lines.
Step 3: Analyze Options C and D
echo -n "Summary:\nAll tests passed" > report.txt uses echo -n which suppresses newlines and includes literal \n, so no actual new lines appear. printf "Summary:" > report.txt && printf "All tests passed" >> report.txt uses printf without \n, so lines run together.
Final Answer:
printf "Summary:\nAll tests passed\n" > report.txt -> Option A
Quick Check:
printf with explicit \n creates exact lines = B [OK]

Quick Trick: Use printf with \n for precise multi-line output [OK]

Common Mistakes:

MISTAKES

Using echo -n with \n prints literal \n
Forgetting \n in printf causes no new lines
Using > and >> inconsistently

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More Bash Scripting Quizzes

You want to create a file report.txt with exactly two lines:

Step 1: Check echo commands in echo "Summary:" > report.txt && echo "All tests passed" > report.txt

Step 2: Check printf commands in printf "Summary:\nAll tests passed\n" > report.txt

Step 3: Analyze Options C and D

Final Answer:

Quick Check:

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