Question 1
8:30 only on weekdays
8:30, 9:30, 10:30 only on weekdays
Every 30 minutes
Every hour
System Commands End Term: 10 May 2026, Set 1-2 (January 2026 term)
The IIT Madras BS System Commands (System Commands) End Term paper sat on 10 May 2026, in the January 2026 term, set 1-2: 20 questions for 100 marks in 180 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.
- 20
- 100
- 180 min
- 9
- 6
- 5
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Correct answer
8:30, 9:30, 10:30 only on weekdays
Question 2
2
3
5
4
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Correct answer
4
Question 3
31/12/2025
2025/12/31
12/31/2025
unchanged
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Correct answer
31/12/2025
Question 4
Removes duplicate lines
Sorts the file alphabetically
Reverses the order of lines
Deletes the last line
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Correct answer
Reverses the order of lines
Question 5
Split lines
Join all lines into one
Reverse lines
Delete the newline at the end
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Correct answer
Join all lines into one
Question 6
A system administrator writes the following shell script to test whether a remote host is reachable before initiating a backup process
The command sends 1 ICMP packet to the host 192.0.2.1 All output is redirected to /dev/null The script then prints the exit status of the previous command using $?
If the host is unreachable, what will be the output of the script?
0
1
2
depends
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Correct answer
1
Question 7
What is the output produced by the above script?
1
2
3
6
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Correct answer
3
Question 8
A system administrator creates the following script named cleanup.sh to prevent the application log file from growing too large :
If the file app.log initially contains 1800 lines, how many lines will remain after executing the script?
1000
1300
1800
500
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Correct answer
500
Question 9
A developer writes the following Bash script to process all .txt files present in the current working directory :
The script is executed in a directory that currently contains no .txt files.
What is the output produced after running the above script?
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Correct answer
Question 10
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Correct answer: 4
Question 11
What is the output after executing the shell script
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Correct answer: 1
Question 12
A data engineer is given a file file.txt containing product names collected from multiple sources.
The file may contain: • Comment lines starting with # • Blank lines • Extra spaces • Repeated consecutive duplicate entries the contents of the file.txt are :
To clean this data, the engineer runs the sed script named s1_10.sed:
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Correct answer: 3
Question 13
A repository has:
How many total commits will exist after all merges?
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Correct answer: 21
Question 14
After executing the following shell script
Which of the following statements are true?
total becomes the number of lines
total prints empty or 0
loop runs in a subshell
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Correct answers
total prints empty or 0
loop runs in a subshell
Question 15
First prints a.txt b.txt
First prints *.txt
Second prints *.txt
Second prints a.txt b.txt
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First prints a.txt b.txt
Second prints *.txt
Question 16
abab
abba
abcabc
none
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abab
abcabc
Question 17
Consider the files f1 and f2 with their content
File f1 with content :
File f2 with content :
Total output lines = 4
Total output lines = 5
First line of f2 prints 3 1
First line of f2 prints 3 3
NR continues counting across files
FNR resets for each file
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Correct answers
Total output lines = 4
First line of f2 prints 3 1
NR continues counting across files
FNR resets for each file
Question 18
Which commands can create a new branch reference?
git branch new
git checkout -b new
git reset --hard HEAD~1
git switch -c new
git clone
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Correct answers
git branch new
git checkout -b new
git switch -c new
Question 19
Consider the following data to answer the given subquestions.
The employees.txt file contains the following data:
The attendance.txt file contains the following data:
And the script report.awk is :
How many employees receive bonuses?
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Correct answer: 3
Question 20
Consider the following data to answer the given subquestions.
The employees.txt file contains the following data:
The attendance.txt file contains the following data:
And the script report.awk is :
The Value of the absent variable is?
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Correct answer: 2