Bash MCQs (Chapterwise Multiple Choice Questions)

What are the results of the command with a user named jon? echo 'Hello, $(whoami)!'

Hello, $(jon)!

Hello, jon!

Hello, $(whoami)!

Hello, whoami!

Answer & Explanation

Correct Answer: Hello, $(whoami)!

Note: This Question is unanswered, help us to find answer for this one

In order for a Bash script to be executed like an OS command, it should start with a shebang line. What does this look like?

#!/usr/bin/env bash

~/usr/bin/env bash

'$!/usr/bin/env bash

#/usr/bin/env bash

Answer & Explanation

Correct Answer: #!/usr/bin/env bash

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If file.sql holds SQL statements to be executed, what will be in file.txt? mysql < file.sql > file.txt

A copy of the contents of file.sql

An error indicating that this is invalid syntax

The error output of the MySQL command

The non-error output of the MySQL command

Answer & Explanation

Correct Answer: The non-error output of the MySQL command

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Assuming that user1 existed, what would be the result of this command string? awk -F: '/user1/{print $1 "-" $3 "-" $6}' /etc/passwd

It would show the username, UID, and home directory of user1 separated by colons.

It would print the UID, GID, and home directory of user1 separated by hyphens.

It would print the UID, comment, and home directory of user1 separated by hyphens.

It would show the username, UID, and home directory of user1 separated by hyphens.

Answer & Explanation

Correct Answer: It would show the username, UID, and home directory of user1 separated by hyphens.

Note: This Question is unanswered, help us to find answer for this one

What does this bash statement do? (( $a == $b ); echo $?

It loops between the values of $a and $b.

It tests whether the values of variables $a and $b are equal.

It returns $b if it is larger than $a.

It returns $a if it is larger than $b.

Answer & Explanation

Correct Answer: It tests whether the values of variables $a and $b are equal.

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How can you copy a directory to another system with compression?

Tar -ssh user@192.158.1.1 /bin/newfile

Tar cvzf - /wwwdata | ssh root@192.168.1.201

You can't compress the stream

Scp -r directory user@192.168.1.1:/tmp

Answer & Explanation

Correct Answer: Tar cvzf - /wwwdata | ssh root@192.168.1.201

Note: This Question is unanswered, help us to find answer for this one

When comparing items with case, what statement indicates an end to the evaluation block?

Stop

Esac

Done

Exit

Answer & Explanation

Correct Answer: Esac

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What is the difference between the $@ and $* variables?

$@ treats each quoted argument as a separate entity. $* treats the entire argument string as one entity.

$* treats each quoted argument as a separate entity. $@ treats the entire argument string as one entity.

$* is used to count the arguments passed to a script, $@ provides all arguments in one string.

$* is the wildcard that includes all arguments with word splitting, $@ holds the same data but in an array.

Answer & Explanation

Correct Answer: $@ treats each quoted argument as a separate entity. $* treats the entire argument string as one entity.

Note: This Question is unanswered, help us to find answer for this one

What is the output of this code? VAR="This old man came rolling" echo "${VAR//man/rolling}"

This old man came man

This old man came rolling

This old rolling came rolling

This old came

Answer & Explanation

Correct Answer: This old rolling came rolling

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Which one is true?

SELinux policy rules are checked after DAC rules.

SELinux policy rules are checked before DAC rules

SELinux policy rules are never checked after DAC rules.

None of these

Answer & Explanation

Correct Answer: SELinux policy rules are checked after DAC rules.

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Bash Quick Quiz

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Correct Answers: 0/10

Start Practicing with our MCQs given below.