Working with Text M10 Exam

Working with Text M10 Exam

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

   • STDERR
   • STDIN
   • STDOUT
   • Log files

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

4. A pipe allows you to…

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

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

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

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

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 5
   • -n

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.
   • …is not case sensitive.
   • …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
    • more
    • less
    • cat

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?

    • -L
    • -w
    • -C
    • -l

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

    • -l
    • -C
    • -w
    • -L

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

    • nl
    • ln
    • num
    • 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