CompTIA CompTIA Linux+ LX0-101 Questions & Answers

• Question 31:

  Which of the following sed commands will replace all instances of the string foo with the string foobar changing the file file1.txt in place?

  A. sed 's/foo/foobar/g' file1.txt

  B. sed 's/foo/foobar/g' file1.txt > file1.txt

  C. sed 's/foo/foobar/g' file1.txt | file1.txt

  D. sed -i 's/foo/foobar/g' file1.txt

  E. sed -i 's/foo/foobar/g' file1.txt > file1.txt

  Correct Answer: D

• Question 32:

  After modifying LILO's configuration file, which of the following commands should be run for the changes to take effect?

  A. kill -HUP `pid of lilo`

  B. lilo-install

  C. lilo

  D. reboot

  Correct Answer: C

• Question 33:

  In order to append the output of ls to a file called bazz, which of the following command lines would an administrator use?

  A. ls > bazz

  B. ls >and bazz

  C. ls and> bazz

  D. ls >> bazz

  Correct Answer: D

• Question 34:

  An administrator wants to preview where the package file, apache-xml.i386.rpm, will install its files before installing it. Which of the following commands should the administrator issue?

  A. rpm -qp apache-xml.i386.rpm

  B. rpm -qv apache-xml.i386.rpm

  C. rpm -ql apache-xml.i386.rpm

  D. rpm -qpl apache-xml.i386.rpm

  Correct Answer: D

• Question 35:

  In GRUB's configuration file an administrator finds the following line: root (hd1,4) Which of the following is the corresponding device name on a Linux system?

  A. /dev/hda4

  B. /dev/hda5

  C. /dev/hdb4

  D. /dev/hdb5

  Correct Answer: D

• Question 36:

  Which of the following would be accomplished if the below line is run as root? chown -R bert /home/bert/*

  A. Nothing, this command is invalid.

  B. It would revoke bert's ownership from the home directory to root.

  C. It would change user ownership of all files in /home/bert to bert.

  D. It would set the group ownership of the directory /home/bert to bert.

  E. It would set ownership of all files and subdirectories in /home/bert to bert.

  Correct Answer: E

• Question 37:

  Which of the following commands will print a list of usernames (first column) and their corresponding user id (uid, third column) from /etc/passwd?

  A. cut -d: -f1,3 /etc/passwd

  B. chop -c 1,3 /etc/passwd

  C. tac 1-3 /etc/passwd

  D. fmt -u /etc/passwd

  Correct Answer: A

• Question 38:

  To allow a regular user account to mount and unmount a filesystem (for instance, a cdrom or floppy), which of the following options will need to be added to the corresponding line in /etc/fstab?

  A. nouidchk

  B. alluser

  C. user

  D. auto

  Correct Answer: C

• Question 39:

  While editing a file in vi, an administrator realizes that the wrong file is being changed. Which of the following vi command sequences will allow the administrator to quit without saving any changes?

  A. :Q!

  B. :q!

  C. :w!

  D. :wq!

  Correct Answer: B

• Question 40:

  All of the following commands will update the Modify timestamp on the file /tmp/myfile.txt EXCEPT:

  A. file /tmp/myfile.txt

  B. echo "Hello" >/tmp/myfile.txt

  C. sed -ie "s/1/2/" /tmp/myfile.txt

  D. echo -n "Hello" >/tmp/myfile.txt

  E. touch /tmp/myfile.txt

  Correct Answer: A