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Question 1:

What output will the following command sequence produce?

echo \’1 2 3 4 5 6\’ | while read a b c; do echo result: $c $b $a; done

A. result: 3 4 5 6 2 1

B. result: 1 2 3 4 5 6

C. result: 6 5 4

D. result: 6 5 4 3 2 1

E. result: 3 2 1

Correct Answer: A

Question 2:

When the command echo $ outputs 1, which of the following statements is true?

A. It is the process ID of the echo command.

B. It is the process ID of the current shell.

C. It is the exit value of the command executed immediately before echo.

D. It is the exit value of the echo command.

Correct Answer: C

Question 3:

Which command makes the shell variable named VARIABLE visible to subshells?

A. export $VARIABLE

B. export VARIABLE

C. set $VARIABLE

D. set VARIABLE

E. env VARIABLE

Correct Answer: B

Question 4:

What output will the command seq 10 produce?

A. A continuous stream of numbers increasing in increments of 10 until stopped.

B. The numbers 1 through 10 with one number per line.

C. The numbers 0 through 9 with one number per line.

D. The number 10 to standard output.

Correct Answer: B

Question 5:

After issuing:

function myfunction { echo $1 $2 ; }

in Bash, which output does:

myfunction A B C

Produce?

A. A B

B. A B C

C. A C

D. B C

E. C B A

Correct Answer: A

102-400 PDF Dumps102-400 VCE Dumps102-400 Practice Test

Question 6:

Which of the following commands puts the output of the command date into the shell variable mydate?

A. mydate=”$(date)”

B. mydate=”exec date”

C. mydate=”$((date))”

D. mydate=”date”

E. mydate=”${date}”

Correct Answer: A

Question 7:

Which of the following files, when existing, affect the behavior of the Bash shell? (Choose TWO correct answers.)

A. ~/.bashconf

B. ~/.bashrc

C. ~/.bashdefaults

D. ~/.bash_etc

E. ~/.bash_profile

Correct Answer: BE

Question 8:

What is the difference between the commands test -e path and test -f path?

A. They are equivalent options with the same behaviour.

B. The -f option tests for a regular file. The -e option tests for an empty file.

C. Both options check the existence of the path. The -f option also confirms that it is a regular file.

D. The -f option tests for a regular file. The -e option tests for an executable file.

Correct Answer: C

Question 9:

How can the existing environment variable FOOBAR be suppressed for the execution of the script./ myscript only?

A. unset -v FOOBAR;./myscript

B. set -a FOOBAR=””;./myscript

C. env -u FOOBAR./myscript

D. env -i FOOBAR./myscript

Correct Answer: C

Question 10:

When the command echo $$ outputs 12942, what is the meaning of 12942?

A. It is the process ID of the echo command.

B. It is the process ID of the current shell.

C. It is the process ID of the last command executed.

D. It is the process ID of the last command which has been placed in the background.

Correct Answer: B

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