brayhan gutierrez cespedes
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brayhan gutierrez cespedes
Created by brayhan gutierrez cespedes almost 3 years ago
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  • 8

    Question 1 of 24

    1

    Error messages generated by commands are sent where by default?

    Select one of the following:

    • Log files

    • STDOUT

    • STDERR

    • STDIN

    Explanation

    Question 2 of 24

    1

    A successful command will print output to STDOUT.

    Select one of the following:

    • True
    • False

    Explanation

    Question 3 of 24

    1

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

    Select one of the following:

    • ls /root >> error.log

    • ls /root 2> error.log

    • ls /root $> error.log

    • ls /root > error.log

    Explanation

    Question 4 of 24

    1

    A pipe allows you to…

    Select one of the following:

    • …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.

    Explanation

    Question 5 of 24

    1

    Channel 2 is:

    Select one of the following:

    • STDIN

    • STDALL

    • STDOUT

    • STDERR

    Explanation

    Question 6 of 24

    1

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

    Select one of the following:

    • echo Testing > output.file

    • echo Testing >> output.file

    • output.file < echo Testing

    • echo Testing -> output.file

    Explanation

    Question 7 of 24

    1

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

    Select one or more of the following:

    • sort < list.file

    • cat list.file | sort

    • cat list.file >> sort

    • echo list.file > sort

    Explanation

    Question 8 of 24

    1

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

    Select one of the following:

    • -l 5

    • No option needed; head displays only five lines by default.

    • -n

    • -n 5

    Explanation

    Question 9 of 24

    1

    The grep command…

    Select one of the following:

    • …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.

    Explanation

    Question 10 of 24

    1

    The grep command can be used with glob characters.

    Select one of the following:

    • True
    • False

    Explanation

    Question 11 of 24

    1

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

    Select one of the following:

    • grep *start file.txt

    • grep $start file.txt

    • grep start file.txt

    • grep ^start file.txt

    Explanation

    Question 12 of 24

    1

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

    Select one of the following:

    • grep ^test file.txt

    • grep $test* file.txt

    • grep *test file.txt

    • grep &test file.txt

    Explanation

    Question 13 of 24

    1

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

    Select one of the following:

    • egrep start end file.txt

    • egrep ‘start|end’ file.txt

    • egrep start&end file.txt

    • egrep (start|end) file.txt

    Explanation

    Question 14 of 24

    1

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

    Select one or more of the following:

    • some

    • less

    • cat

    • more

    Explanation

    Question 15 of 24

    1

    The find command can search for files based on the size of the file.

    Select one of the following:

    • True
    • False

    Explanation

    Question 16 of 24

    1

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

    Select one of the following:

    • search

    • locate

    • where

    • find

    Explanation

    Question 17 of 24

    1

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

    Select one of the following:

    • -f

    • -d

    • =

    • -D

    Explanation

    Question 18 of 24

    1

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

    Select one of the following:

    • -D

    • -f

    • -d

    • #

    Explanation

    Question 19 of 24

    1

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

    Select one of the following:

    • -l

    • -w

    • -C

    • -L

    Explanation

    Question 20 of 24

    1

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

    Select one of the following:

    • -l

    • -L

    • -C

    • -w

    Explanation

    Question 21 of 24

    1

    Which command can be used to print line numbers?

    Select one of the following:

    • num

    • sort

    • ln

    • nl

    Explanation

    Question 22 of 24

    1

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

    Select one of the following:

    • True
    • False

    Explanation

    Question 23 of 24

    1

    The command echo “text” > file.txt will not overwrite file.txt if it already exists.

    Select one of the following:

    • True
    • False

    Explanation

    Question 24 of 24

    1

    The command echo “text” >> file.txt will not overwrite file.txt if it already exists.

    Select one of the following:

    • True
    • False

    Explanation