Lpi LPI Certifications 101-500 Questions & Answers

• Question 121:

  You are trying to make a hard link to an ordinary file but ln returns an error. Which of the following could cause this?

  A. The source file is hidden.

  B. The source file is read-only.

  C. The source file is a shell script.

  D. You do not own the source file.

  E. The source and the target are on different filesystems.

  Correct Answer: E

• Question 122:

  What does the + symbol mean in the following grep regular expression: grep '^d[aei]\+d$' /usr/share/dict/words

  A. Match the preceding character set ([aei]) one or more times.

  B. Match the preceding character set ([aei]) zero or more times.

  C. Match the preceding character set ([aei]) zero or one times.

  D. Match a literal + symbol.

  Correct Answer: A

• Question 123:

  Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.)

  A. uptime

  B. up

  C. top

  D. uname -u

  E. time p

  Correct Answer: AC

• Question 124:

  Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.)

  A. <

  B. <<<

  C. >

  D. >>>

  E. %>

  Correct Answer: ABC

• Question 125:

  Which of the following explanations are valid reasons to run a command in the background of your shell?

  A. The command does not need to execute immediately.

  B. The command has to run immediately but the user needs to log out.

  C. The system is being shut down and the command needs to restart execution immediately after the reboot.

  D. The command can run at a lower priority than normal commands run on the command line.

  Correct Answer: B

• Question 126:

  When given the following command line.

  echo "foo bar" | tee bar | cat

  Which of the following output is created?

  A. cat

  B. foo bar

  C. tee bar

  D. bar

  E. foo

  Correct Answer: B

• Question 127:

  When running the command sed -e "s/a/b/" /tmp/file >/tmp/file While /tmp/file contains data, why is /tmp/file empty afterwards?

  A. The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.

  B. The command sed did not match anything in that file therefore the output is empty.

  C. When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens itfor reading.

  D. Redirection for shell commands do not work using the > character. It only works using the | character instead.

  Correct Answer: C

• Question 128:

  Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types?

  A. magic

  B. type

  C. file

  D. pmagic

  E. hash

  Correct Answer: C

• Question 129:

  Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.)

  A. find /tmp -uid root -print

  B. find -path /tmp -uid root

  C. find /tmp -user root -print

  D. find /tmp -user root

  E. find -path /tmp -user root rint

  Correct Answer: CD

• Question 130:

  Which of the following command sets the Bash variable named TEST with the content FOO?

  A. set TEST="FOO"

  B. TEST = "FOO"

  C. var TEST="FOO"

  D. TEST="FOO"

  Correct Answer: D