Linux Essentials 2.0 Chapter 10 Exam Answers

Posted on by

Last Updated on October 17, 2019 by Admin

NDG Linux Essentials 2.0 Chapter 10 Exam Answers

  1. Error messages generated by commands are sent where by default?

    • STDERR
    • STDIN
    • Log files
    • STDOUT

  2. A successful command may, or may not print output to STDOUT.
    True or False?

    • True
    • False

  3. Which of the following commands will direct error messages to the file, error.log?

    • ls /root >> error.log
    • ls /root > error.log
    • ls /root 2> error.log
    • ls /root $> error.log

  4. A pipe allows you to…

    • …send the same input to multiple commands.
    • …type multiple commands at one prompt.
    • …send the output of one command to another.
    • …send the output of a command to a file.

  5. Channel 2 is:

    • STDOUT
    • STDALL
    • STDERR
    • STDIN

  6. Which of the following commands will append its output to output.file?

    • echo Testing >> output.file
    • echo Testing > output.file
    • output.file < echo Testing
    • echo Testing -> output.file

  7. Which command(s) can be used to sort the lines of list.file alphabetically and display it on the screen?

    (choose two)

    • sort < list.file
    • cat list.file >> sort
    • echo list.file > sort
    • cat list.file | sort

  8. Which option of the head command will display only the first five lines of a file?

    • No option needed; head displays only five lines by default.
    • -n
    • -l 5
    • -n 5

  9. The grep command…

    • …will display all the lines that begin with the specified Regular Expression.
    • …will display all the lines in a file containing the specified Regular Expression.
    • …will display the line numbers in a file that contain a specified Regular Expression.
    • …is not case sensitive.

  10. The grep command can be used with glob characters.

    True or False?

    • True
    • False

  11. Which of the following commands will display only lines that begin with start?

    • grep \start file.txt
    • grep $start file.txt
    • grep *start file.txt
    • grep ^start file.txt

  12. Which of the following commands will display only lines that begin with test?

    • grep $test* file.txt
    • grep *test file.txt
    • grep &test file.txt
    • grep ^test file.txt

  13. Which of the following commands will display lines that contain either start or end?

    • egrep ‘start|end’ file.txt
    • egrep (start|end) file.txt
    • egrep start end file.txt
    • egrep start&end file.txt

  14. Which of the following commands can be used to scroll through a text file?

    (choose two)

    • some
    • more
    • cat
    • less

  15. Which option for the cut command is used to specify a delimiter?

    • -D
    • -f
    • =
    • -d

  16. Which option for the cut command is used to specify the field?

    • -d
    • #
    • -D
    • -f

  17. Which option for the wc command will print the number of lines in a file?

    • -w
    • -l
    • -L
    • -C

  18. Which option for the wc command will print the total number of words in a file?

    • -l
    • -C
    • -L
    • -w

  19. Which command can be used to print line numbers?

    • num
    • nl
    • ln
    • sort

  20. The command echo "text" > file.txt will create file.txt if it does not already exist.

    True or False?

    • True
    • False

  21. The command echo "text" > file.txt will not overwrite file.txt if it already exists.

    True or False?

    • True
    • False

  22. The command echo "text" >> file.txt will not overwrite file.txt if it already exists.

    True or False?

    • True
    • False