<<<<< TERMINAL SCREEN DRAWING SUBROUTINE >>>>>>>>

UTERMINAL

                    TERMINAL                  

NEXT

 $V1$

     <<<<<< TIME POSE SUBROUTINE >>>>>>>>>

PAUSE

If they want to quit, do so

    <<<<<< 4 BOTTOM LINES CLEANING SUBROUTINE >>>>>>

ENCORE5

    <<<<<< REVIEW CLEANING SUBROUTINE >>>>>>

ENCORE

    <<<<<< CLEAN THE INSIDE OF BOUNDED ARE ONLY >>>>>

BOX

                       ILLUSTRATION                     

GO

 Assume that a restricted user has access only to the

 commands in the directory /usr/rbin,

      ls /usr/rbin

      cat

      pwd

      echo

      ls

 Let's find out what happens when the user enters ps -ef

 Let's find out what happens when the user enters ps -aux

 $PROMPT$

 That is correct!

 You've got it on the 2nd try.

 Good, you understand the concept.

 Please type ps -ef

 Please type ps -ef

 Please type ps -aux

 Please type ps -aux

 You will be helped this time!

 $PROMPT$

FORGET1

 ps -ef                                

 ps -aux                           

 Observe the result on the terminal!

 ps: not found

 $PROMPT$