Câu 79: XK0-005: CompTIA Linux+

A systems administrator is checking the system logs. The administrator wants to look at the last 20 lines of a log. Which of the following will execute the command?

1. A. tail -v 20
2. B. tail -n 20 — đáp án hiện tại
3. C. tail -c 20
4. D. tail -l 20