At the command prompt, type head $/$etc$/$services and press Enter. How many lines are displayed, and why?

$6$

At the command prompt, type head $-5/$etc$/$services and press Enter. How many lines are displayed and why? Next, type head $-3/$etc$/$services and press Enter. How many lines are displayed and why?

$7$

At the command prompt, type tail $/$etc$/$services and press Enter. What is displayed on the screen? How many lines are displayed and why?

$8$

At the command prompt, type tail $-5/$etc$/$services and press Enter. How many lines are displayed and why? Type the cat $$n $/$etc$/$services command at a command prompt and press Enter to justify your answer.

$9$

At the command prompt, type file $/$bin$/$nice and press Enter. What type of file is it$?$ Should you use a text tool command on this file?