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System Commands · Shell expansion, pipes & redirection

14 questions · 63 marks · 6 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

System Commands

Shell expansion, pipes & redirection

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Quiz 1 · 26 Oct 2025 (AN)Quiz 1

Q1MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q2MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q3MCQ4 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q4NAT3 Marks·Write the number
Key ↓
Your answer:

End Term · 31 Aug 2025 (FN)End Term

Q5MCQ5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q6MCQ5 Marks·Choose one option
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q7MSQ5 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D

End Term · 31 Aug 2025 (AN)End Term

Q8MSQ5 Marks·Choose all correct options
Asked 2 times Key ↓
Which of the following statements about subshells is/are true?
1. A(cd /tmp; ls) runs in a subshell
2. Bcd /tmp; ls runs in a subshell
3. CVariables set in a subshell are visible to the parent shell
4. DCommands inside $(...) are executed in a subshell

End Term · 13 Apr 2025 (FN)End Term

Q9MCQ6 Marks·Choose one option
Key ↓
1. ADisplay the today’s date
2. BNothing is printed
3. Clist all the lines of file1 that do not match file2
4. D0
Q10MSQ6 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D
5. E
Q11NAT6 Marks·Write the number
Asked 2 times Key ↓
Your answer:
Q12NAT6 Marks·Write the number
Key ↓
Your answer:

End Term · 22 Dec 2024 (FN)End Term

Q13MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E

End Term · 22 Dec 2024 (AN)End Term

Q14MCQ3 Marks·Choose one option
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
5. E

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1C

Q2D

Q3A

Q47

Q5B

Q6B

Q7B, D

Q8A, D

Q9B

Q10B, E

Q113

Q12149

Q13A

Q14B

Questions and answer keys are reproduced from the official IIT Madras BS papers. Topics and repeated question types are BTechi’s own grouping. BTechi is not affiliated with IIT Madras.