LFCS Free Practice Test

In the vi editor, which of the following commands will copy the current line into the vi buffer?

1. A. c
2. B. cc
3. C. 1c
4. D. yy
5. E. 1y

Correct Answer: D

What is the effect of the egrep command when the -v option is used?

1. A. It enables color to highlight matching parts.
2. B. It only outputs non-matching lines.
3. C. It shows the command\'s version information.
4. D. It changes theoutput order showing the last matching line first.

Correct Answer: B

What does the exit status 0 indicate about a process?

1. A. The process ended without any problems.
2. B. The process was terminated by the user.
3. C. The process couldn\'t finish correctly.
4. D. The process waited for an input but got none.
5. E. The process finished in time.

Correct Answer: A

What is the difference between the i and a commands of the vi editor?

1. A. i (interactive) requires the user to explicitly switch between vi modes whereas a (automatic) switches modes automatically.
2. B. i (insert) inserts text before the current cursor position whereas a (append) inserts text after the cursor.
3. C. i (independent rows) starts every new line at the first character whereas a (aligned rows) keeps the indentation of the previous line.
4. D. i (interrupt) temporarily suspends editing of a file to the background whereas a (abort) terminates editing.

Correct Answer: B

Which command can be used to delete a group from a Linux system?

1. A. groupdel
2. B. groupmod
3. C. groups
4. D. groupedit

Correct Answer: A