Lpi LPI Certifications 101-400 Questions & Answers

• Question 91:

  Which of the following commands will reduce all consecutive spaces down to a single space?

  A. tr '\s' ' ' < a.txt > b.txt

  B. tr -c ' ' < a.txt > b.txt

  C. tr -d ' ' < a.txt > b.txt

  D. tr -r ' ' '\n' < a.txt > b.txt

  E. tr -s ' ' < a.txt > b.txt

  Correct Answer: E

• Question 92:

  Which character, added to the end of a command, runs that command in the background as a child process of the current shell?

  A. !

  B. +

  C. and

  D. %

  E. #

  Correct Answer: C

• Question 93:

  In the vi editor, which of the following commands will copy the current line into the vi buffer?

  A. c

  B. cc

  C. 1c

  D. yy

  E. 1y

  Correct Answer: D

• Question 94:

  Which of the following sequences in the vi editor saves the opened document and exits the editor? (Choose TWO correct answers.)

  A. esc ZZ

  B. ctrl :w!

  C. esc zz

  D. esc :wq!

  E. ctrl XX

  Correct Answer: AD

• Question 95:

  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 96:

  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 97:

  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 98:

  Which of the following commands is used to change options and positional parameters for a running Bash?

  A. history

  B. set

  C. bashconf

  D. setsh

  E. envsetup

  Correct Answer: B

• Question 99:

  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 100:

  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