Unix Shell Script MCQs (Chapterwise Multiple Choice Questions)

Which of the following is not a shell keyword?

shift

readonly

ls

unset

echo

Answer & Explanation

Correct Answer: ls

Note: This Question is unanswered, help us to find answer for this one
The expression expr -7 % 2 evaluates to:

1

-1

2

-2

Answer & Explanation

Correct Answer: -1

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Which of the following is/are allowed in an arithmetic statement involving expr command?

<>

{}

( )

&&

%

3-5

Answer & Explanation

Correct Answer: 3-5

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The exit statement is used in a loop to:

exit from the

exit from the

terminate the execution of a script.

exit from an

Answer & Explanation

Correct Answer: terminate the execution of a script.

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A shell script is executed by:

a code generator.

an assembler.

an interpreter.

a compiler.

Answer & Explanation

Correct Answer: an interpreter.

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Which of the following is true about the "continue" statement?

It cannot be used inside a loop.

It continues the control to the beginning of the loop, bypassing the statements below it, inside the loop.

It can only be used in a while loop.

It has to be associated with an if statement.

It is used with the case construct.

Answer & Explanation

Correct Answer: It continues the control to the beginning of the loop, bypassing the statements below it, inside the loop.

Note: This Question is unanswered, help us to find answer for this one
Which of the following assignments is illegal?

a=`ls`

b=`ls -l`

c=`1972`

d=`who`

e=`who | grep aa1`

Answer & Explanation

Correct Answer: c=`1972`

Note: This Question is unanswered, help us to find answer for this one
The expression expr -2 % 7 evaluates to:

1

2

-2

0.285

Answer & Explanation

Correct Answer: -2

Note: This Question is unanswered, help us to find answer for this one
Which of the following loops is invalid?

while [ $? -eq 0 ]

while [ $count -le 0.1]

while [ $1 -gt 10]

while [ 0 ]

while $

Answer & Explanation

Correct Answer: while $

Note: This Question is unanswered, help us to find answer for this one
Which of the following shows the correct precedence order of operators used in a shell? Operators on left side of comma have higher precedence than those on the right side of comma.

( ) , ** , * or / , + or -

( ) , * or / , ** , + or -

( ) , ** , + or - , * or /

** , ( ) , + or - ,* or /

Answer & Explanation

Correct Answer: ( ) , ** , * or / , + or -

Note: This Question is unanswered, help us to find answer for this one
Unix Shell Script Quick Quiz

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Unix Shell Script MCQ

Unix Shell Script Quick Quiz

Which of the following is not a shell keyword?

The expression expr -7 % 2 evaluates to:

Which of the following is/are allowed in an arithmetic statement involving expr command?

The exit statement is used in a loop to:

A shell script is executed by:

Which of the following is true about the "continue" statement?

Which of the following assignments is illegal?

The expression expr -2 % 7 evaluates to:

Which of the following loops is invalid?

Which of the following shows the correct precedence order of operators used in a shell? Operators on left side of comma have higher precedence than those on the right side of comma.