Lpi Linux Essentials 010-150 Questions & Answers

• Question 41:

  Which of the following statements may be used to access the second command line argument to a script?

  A. "$ARG2"

  B. $1

  C. "$2"

  D. "$1"

  E. '$2'

  Correct Answer: C

• Question 42:

  Which of the following commands will output all of the lines that contain either the string Fred or fred? (Choose TWO correct answers.)

  A. grep -v fred data_file

  B. grep '[f]red' data_file

  C. egrep fred data_file

  D. grep '[Ff]red' data_file

  E. grep -i fred data_file

  Correct Answer: DE

• Question 43:

  What keyword is missing from the following segment of the shell script?

  for i in *; _____

  cat $i

  done

  A. do

  B. then

  C. enod

  D. fi

  E. run

  Correct Answer: A

• Question 44:

  Why is the file data.txt empty after executing sort data.txt > data.txt?

  A. Because, if data.txt is empty now, it must have been empty before.

  B. Because sort cannot sort text files, only binary files.

  C. Because sort detects that both files are the same.

  D. Because the file gets truncated before sort is executed.

  Correct Answer: D

• Question 45:

  Which commands will archive /home and its content to /mnt/backup? (Choose TWO correct answers.)

  A. cp -ar /home /mnt/backup

  B. mv /home /mnt/backup

  C. sync -r /home /mnt/backup

  D. tar -cf /mnt/backup/archive.tar /home

  E. copy -r /home /mnt/backup

  Correct Answer: AD

• Question 46:

  How could one search for the file foo.txt under the directory /home?

  A. search /home -file foo.txt

  B. search /home foo.txt

  C. find /home -file foo.txt

  D. find /home -name foo.txt

  E. find /home foo.txt

  Correct Answer: D

• Question 47:

  What is the output of the following command?

  tail -n 20 test.txt

  A. The first 20 lines of test.txt.

  B. The last 20 lines of test.txt omitting the blank lines.

  C. The last 20 lines of test.txt with line numbers.

  D. The last 20 lines of test.txt including blank lines.

  Correct Answer: D

• Question 48:

  How is it possible to determine if an executable file is a shell script which is read by Bash?

  A. The r bit is set.

  B. The file must end with .sh.

  C. The first line starts with #!/bin/bash.

  D. /bin/bash has to be run in debug mode.

  E. Scripts are never executable files.

  Correct Answer: C

• Question 49:

  Which of the following commands can be used to view a file and do search operations within it while viewing the contents?

  A. less

  B. find

  C. grep

  D. report

  E. see

  Correct Answer: A

• Question 50:

  Which function does a shell program serve?

  A. It provides a graphical environment.

  B. It is responsible for establishing a connection to another computer.

  C. It receives user commands and executes them.

  D. It is responsible for logging a user into the system.

  Correct Answer: C