101-500 : LPIC-1 Exam 101 : Part 03

101-500 : LPIC-1 Exam 101 : Part 03

1. FILL BLANK

   Which program runs a command in specific intervals and refreshes the display of the program’s output? (Specify ONLY the command without any path or parameters.)

   • watch

2. Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which single character command will insert the deleted content below the current line?

   • i (lowercase)
   • p (lowercase)
   • P (uppercase)
   • U (uppercase)
   • u (lowercase)

3. Which of the following commands changes all CR-LF line breaks in the text file userlist.txt to Linux standard LF line breaks and stores the result in newlist.txt?

   • tr –d ‘\r’ < userlist.txt > newlist.txt

   • tr –c ‘\n\r’ ‘’ <newlist.txt> userlist.txt

   • tr ‘\r\n’ ‘’ <userlist.txt> newlist.txt

   • tr ‘\r’ ‘\n’ userlist.txt newlist.txt

   • tr –s ‘/^M/^J/’ userlist.txt newlist.txt

4. Given the following input stream:

   txt1.txt
   
   atxt.txt
   
   txtB.txt

   Which of the following regular expressions turns this input stream into the following output stream?

   txt1.bak.txt
   
   atxt.bak.txt
   
   txtB.bak.txt

   • s/^.txt/.bak/

   • s/txt/bak.txt/

   • s/txt$/bak.txt/

   • s/^txt$/.bak^/

   • s/[.txt]/.bak$1/

5. Which command must be entered before exiting vi to save the current file as filea.txt?

   • %s filea.txt

   • %w filea.txt

   • :save filea.txt

   • :w filea.txt

   • :s filea.txt

6. Which of the following signals is sent to a process when the key combination Ctrl+C is pressed on the keyboard?

   • SIGTERM
   • SIGCONT
   • SIGSTOP
   • SIGKILL
   • SIGINT

7. Which of the following commands displays the output of the foo command on the screen and also writes it to a file called /tmp/foodata?

   • foo | less /tmp/foodata

   • foo | cp /tmp/foodata

   • foo > /tmp/foodata

   • foo | tee /tmp/foodata

   • foo > stdout >> /tmp/foodata

8. What output will be displayed when the user fred executes the following command?

   echo ‘fred $USER’

   • fred fred

   • fred /home/fred/

   • ‘fred $USER’

   • fred $USER

   • ‘fred fred’

9. Which of the following commands displays the path to the executable file that would be executed when the command foo is invoked?

   • lsattr foo

   • apropos foo

   • locate foo

   • whatis foo

   • which foo

10. When redirecting the output of find to the xargs command, what option to find is useful if the filenames contain spaces?

    • –rep-space

    • -printnul

    • -nospace

    • –ignore-space

    • –print0

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

    • uptime

    • up

    • time --up

    • uname –u

    • top

12. What is true regarding the command

    ls > files

    if files does not exist?

    • The output of ls is printed to the terminal
    • files is created and contains the output of ls
    • An error message is shown and ls is not executed
    • The command files is executed and receives the output of ls
    • Any output of ls is discarded

13. Which of the following files, located in a user’s home directory, contains the Bash history?

    • .bashrc_history

    • .bash_histfile

    • .history

    • .bash_history

    • .history_bash

14. Which wildcards will match the following filenames? (Choose two.)

    ttyS0
    
    ttyS1
    
    ttyS2

    • ttyS[1-5]

    • tty?[0-5]

    • tty*2

    • tty[A-Z][012]

    • tty[Ss][02]

15. Which of the following commands redirects the output of ls to standard error?

    • ls >-1

    • ls <<ERR

    • ls >&2

    • ls >>2

    • ls |error

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

    • gzip archive.tgz | tar xvf -

    • tar –fzt archive.tgz

    • gzip –d archive.tgz | tar tvf -

    • tar cf archive.tgz

    • tar ztf archive.tgz

17. Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?

    • fmt –f 1,4 /etc/passwd

    • cut –d : -f 1,4 /etc/passwd

    • sort –t : -k 1,4 /etc/passwd

    • paste –f 1,4 /etc/passwd

    • split –c 1,4 /etc/passwd

18. Which of the following regular expressions represents a single upper-case letter?

    • :UPPER:
    • [A-Z]
    • !a-z
    • %C
    • {AZ}

19. FILL BLANK

    Which command is used to start another command with a given nice level? (Specify ONLY the command without any path or parameters.)

    • nice

20. Given a log file loga.log with timestamps of the format DD/MM/YYYY:hh:mm:ss, which command filters out all log entries in the time period between 8:00 am and 8:59 am?

    • grep –E ‘:08:[09]+:[09]+’ loga.log

    • grep –E ‘:08:[00]+’ loga.log

    • grep –E loga.log ‘:08:[0-9]+:[0-9]+’

    • grep loga.log ‘:08:[0-9]:[0-9]’

    • grep –E ‘:08:[0-9]+:[0-9]+’ loga.log