Lab 3-3 Virtual Machine Labs

Question 1

Which parameter of the grep command displays the line number of the line that contains the searched text?

Answer 1

-n

Question 2

Using the grep command, you want to count the number of lines in which the searched text appears. Which parameter should you use?

Answer 2

-c

Question 3

To count the number of lines in /etc/yum.conf that either start with 1 or end with 01, which of the following command should be used?

Answer 3

egrep –c ‘^1|01$’ /etc/yum.conf

Question 4

To delete all the blank lines at the end of the file, which of the following command should be used?

Answer 4

sed ‘/^ / d’ yumtest.conf

Question 5

Which of the following special characters cannot be used with the grep command unless you use them as metacharacters? [Choose all that apply.]

Answer 5

All (select all of them)