Indian Institute of Technology Madras
BS Degree Programme · Examination & Study Paper
System Commands
Files, links, permissions & archives
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

- A

- B

- C

- D

- A
- Q2MCQ3 Marks·Choose one option

- AOwner can only execute, group can only write, others can read
- BOwner can read and execute, group can read and execute, others can read
- COwner can read and execute, group can write and execute, others can read
- DOwner can read and execute, group can read and write, others can read and write
Read the passage below, then answer Q3–Q4

Based on the above data, answer the given subquestions.
Q3MSQ3 Marks·Choose all correct options
- A

- B

- C

- D

- A
- Q4MSQ3 Marks·Choose all correct options

- A

- B

- C

- D

- A
End Term · 31 Aug 2025 (FN)End Term
- Q5MCQ5 Marks·Choose one option

- A

- B

- C

- D

- A
- Q6NAT5 Marks·Write the number
Your answer:
End Term · 31 Aug 2025 (AN)End Term
- Q7NAT5 Marks·Write the number
Your answer: - Q8NAT5 Marks·Write the number
Your answer:
End Term · 13 Apr 2025 (FN)End Term
- Q9MCQ6 Marks·Choose one option
Consider current_permissions contain the present permissions of a file. Which of the following shell script statement calculate the new permissions by removing the read permission?
- A

- B

- C

- D

- A
- Q10MCQ6 Marks·Choose one option

- ACompresses the /remove directory into a tarball, excluding the /sample subdirectory, and names it backup.tar.gz.
- BDeletes the /sample subdirectory before creating a compressed tarball of /remove.
- CExtracts the contents of backup.tar.gz to /remove, excluding the /sample directory.
- DLists the contents of /remove, ignoring the /sample subdirectory.