UNIX MCQ Questions for Exam and Interview Preparation

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Each section contains 100 MCQs on Unix .

Which one of the following command is used to replace a single character with many?

A) s B) r C) R D) S

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Shell enables one or more arguments to be obtained from the standard output of another command. This feature is called . . . . . . . .

A) command substitution B) argument substitution C) shell substitution D) korn

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which operator is used in vi to filter text?

A) %% B) && C) $ D) !

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Shell scripts are executed in a separate child shell process.

A) True B) False

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which command will be used for selecting lines 3 to 10 from emp.lst?

A) sed 3,10 emp.lst B) sed -n '3,10p' emp.lst C) sed -n '^,10p' emp.lst D) sed -n, 10p

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What does the following command do?

$ echo *

A) error B) undefined behavior C) displays "*" D) lists all filenames in the current directory

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

For looping in a list, . . . . . . . . is used.

A) for B) fordo C) foreach D) while

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following command will remove the file named * ?

A) rm * B) rm '*' C) rm \* D) rm '*' and rm \*

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which option is used with ps command to list system processes?

A) -A B) -a C) -e D) -A and -e

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following command will be used if we want to abort editing and quit the editor even if the buffer has been changed and not saved?

A) :q B) :b C) :q! D) :w

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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UNIX MCQ Questions for Exam and Interview Preparation | Computer Science