Linux Essentials

Linux Essentials Chapter 8 Exam Answer 2016

Linux Essentials Chapter 8 Exam Answer 2016
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1. Error messages generated by commands are sent where by default?

  • Log files
  • STDOUT
  • STDERR
  • STDIN

2. A successful command will print output to STDOUT.. True or False?

  • True
  • False

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

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

  • STDIN
  • STDALL
  • STDOUT
  • STDERR

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

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

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

9. The grep command…

  • …will display all the lines that begin with the specified Regular Expression.
  • …is not case sensitive.
  • …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.

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
  • less
  • cat
  • more

15. The find command can search for files based on the size of the file.. True or False?

  • True
  • False

16. Which of the following commands scans the file to determine file locations?

  • search
  • locate
  • where
  • find

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

  • -f
  • -d
  • =
  • -D

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

  • -D
  • -f
  • -d
  • #

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

  • -l
  • -w
  • -C
  • -L

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

  • -l
  • -L
  • -C
  • -w

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

  • num
  • sort
  • ln
  • nl

22. The command echo “text” > file.txt will create file.txt if it does not already exist.. True or False?

  • True
  • False

23. The command echo “text” > file.txt will not overwrite file.txt if it already exists.. True or False?

  • True
  • False

24. The command echo “text” >> file.txt will not overwrite file.txt if it already exists.. True or False?

  • True
  • False

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Elora
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Elora

Eu espero que a história seja tão boa quanto a dos jogos anteriores. Mesmo estando feliz que os fãs estejam colaborando para outro jogo da série, não consigo deixar de pensar que é extremamente triste o fato de que Itoi não está mais interessado em criar mais jogos de Mother. O que ele quer, afinal, poluapridade?

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