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System Commands · awk, sort & text filters

15 questions · 65 marks · 5 papers

Answer key

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

System Commands

awk, sort & text filters

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.

End Term · 31 Aug 2025 (FN)End Term

Q1MCQ5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D

End Term · 31 Aug 2025 (AN)End Term

Q2MCQ5 Marks·Choose one option
Key ↓
You're using gawk to identify repeated words in notes.txt. Which gawk statements correctly use backreferences?
1. A
2. B
3. C
4. D
Q3MCQ5 Marks·Choose one option
Asked 2 times Key ↓
1. A192.168.0.1 3
2. B192.168.0.2 2
3. C192.168.0.3 1
4. DBoth 192.168.0.1 3 and 192.168.0.2 2
Q4MCQ5 Marks·Choose one option
Key ↓
1. AFirst line of each paragraph
2. BAll blank lines
3. CEntire file in one line
4. DFirst field of each line
Q5MSQ5 Marks·Choose all correct options
Asked 3 times Key ↓
1. Ased -n '1,10p' file.txt
2. Bsed 11q file.txt
3. Cawk 'NR <= 10' file.txt
4. Dcat -n 10 file.txt
Q6NAT5 Marks·Write the number
Key ↓
Your answer:

End Term · 13 Apr 2025 (FN)End Term

Q7MCQ7 Marks·Choose one option
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q8MCQ7 Marks·Choose one option
Asked 2 times Key ↓
What is the primary purpose of this AWK script?
1. ATo convert contents of file to lowercase.
2. BTo count the frequency of each word in a text file.
3. CTo count the number of lines in a file.
4. DTo replace all non-alphabetic characters in a file.

End Term · 22 Dec 2024 (FN)End Term

Q9MCQ3 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
5. E
Q10MCQ3 Marks·Choose one option
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q11MSQ3 Marks·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Q12MSQ3 Marks·Choose all correct options
Key ↓
1. A
2. B
3. C
4. D

End Term · 22 Dec 2024 (AN)End Term

Q13MCQ3 Marks·Choose one option
Asked 3 times Key ↓
1. A
2. B
3. C
4. D
Q14MSQ3 Marks·Choose all correct options
Asked 2 times Key ↓
1. A
2. B
3. C
4. D
Q15MSQ3 Marks·Choose all correct options
Asked 3 times Key ↓
1. A
2. B
3. C
4. D

Official Key

Master Answer Key & Explanations

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

Reveal Key

Q1C

Q2B

Q3A

Q4A

Q5A, B, C

Q69

Q7B

Q8B

Q9D

Q10B

Q11A, B, D

Q12A, B

Q13B

Q14A, B, D

Q15A, C, D

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.