CompTIA CompTIA Certifications LX0-103 Questions & Answers

• Question 61:

  Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?

  A. sed '/bob/Bob' letter > newletter

  B. sed s/bob/Bob/ letter < newletter

  C. sed 's/bob/Bob' letter > newletter

  D. sed 's/bob/Bob/g' letter > newletter

  E. sed 's/bob, Bob/' letter > newletter

  Correct Answer: D

• Question 62:

  From a Bash shell, which of the following commands directly executes the instruction from the file /usr/ local/bin/runme.sh without starting a subshell? (Please select TWO answers.)

  A. source /usr/local/bin/runme.sh

  B. . /usr/local/bin/runme.sh

  C. /bin/bash /usr/local/bin/runme.sh

  D. /usr/local/bin/runme.sh

  E. run /usr/local/bin/runme.sh

  Correct Answer: AB

• Question 63:

  Regarding the command: nice -5 /usr/bin/prog

  Which of the following statements is correct?

  A. /usr/bin/prog is executed with a nice level of -5.

  B. /usr/bin/prog is executed with a nice level of 5.

  C. /usr/bin/prog is executed with a priority of -5.

  D. /usr/bin/prog is executed with a priority of 5.

  Correct Answer: B

• Question 64:

  Which shell command is used to continue background execution of a suspended command?

  A. and

  B. bg

  C. cont

  D. exec

  E. :and

  Correct Answer: B

• Question 65:

  Which of the following shell redirections will write standard output and standard error output to a file named filename?

  A. 2>and1 >filename

  B. >filename 2>and1

  C. 1>and2>filename

  D. >>filename

  E. 1and2>filename

  Correct Answer: B

• Question 66:

  What is the effect of the egrep command when the -v option is used?

  A. It enables color to highlight matching parts.

  B. It only outputs non-matching lines.

  C. It shows the command's version information.

  D. It changes the output order showing the last matching line first.

  Correct Answer: B

• Question 67:

  What does the ? symbol within regular expressions represent?

  A. Match the preceding qualifier one or more times.

  B. Match the preceding qualifier zero or more times.

  C. Match the preceding qualifier zero or one times.

  D. Match a literal ? character.

  Correct Answer: C

• Question 68:

  In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple times or applied to multiple rows?

  A. By using the command :repeat followed by the number and the command.

  B. By specifying the number right in front of a command such as 4l or 2yj.

  C. By selecting all affected lines using the shift and cursor keys before applying the command.

  D. By issuing a command such as :set repetition=4 which repeats every subsequent command 4 times.

  Correct Answer: B

• Question 69:

  Which of the following files, located in the user home directory, is used to store the Bash history?

  A. .bash_history

  B. .bash_histfile

  C. .history

  D. .bashrc_history

  E. .history_bash

  Correct Answer: A

• Question 70:

  Which of the following commands displays the contents of a gzip compressed tar archive?

  A. gzip archive.tgz | tar xvf

  B. tar ztf archive.tgz

  C. gzip -d archive.tgz | tar tvf

  D. tar cf archive.tgz

  Correct Answer: B