UNIX MCQ Questions for Exam and Interview Preparation

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Each section contains 100 MCQs on Unix .

. . . . . . . . system call is used for writing to a file.

A) read B) write C) close D) seek

Discuss

Answer & Solution

Answer: Option B

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

To know the PID of your current shell, which command will be used?

A) echo $$ B) echo $ C) $SHELL D) $PATH

Discuss

Answer & Solution

Answer: Option A

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

A user-defined variable is initialized to . . . . . . . .

A) zero B) zero or null string C) null D) operator

Discuss

Answer & Solution

Answer: Option B

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

-f option when used with mv command overwrites existing files without prompting any messages.

A) True B) False

Discuss

Answer & Solution

Answer: Option A

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

Which of the following is performed by expr string handling's function?

A) determine the length of string B) extract a substring C) locate the position of a character in a string D) determine the length of string, extract and locate the position of the string

Discuss

Answer & Solution

Answer: Option D

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

Which of the following is a correct syntax for performing substitution on a file?

A) :address/source_pattern/target_pattern/flag B) :address/target_pattern source_pattern/flag C) :address/flag D) :address

Discuss

Answer & Solution

Answer: Option A

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

For locating the first position of a character in a string we can use expr command.

A) True B) False

Discuss

Answer & Solution

Answer: Option A

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

Which function is used by perl for displaying the length of a string?

A) string B) len C) split D) length

Discuss

Answer & Solution

Answer: Option D

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

What are positional parameters?

A) special variables for assigning arguments from the command line B) pattern matching parameters C) special variables for reading user input D) special variables and patterns

Discuss

Answer & Solution

Answer: Option A

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

We can run the jobs in the background in UNIX.

A) True B) False

Discuss

Answer & Solution

Answer: Option A

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