<<<<<< SOME CLEANING SUBROUTINE >>>>>>

DRAWFILE

What goes to the computer mailboxes of all members of the office mailgroup is:

                Invitation                             

     Dear Colleagues, There will be a                    

     celebration for the announcement of the                     

     new product.  Meeting time, 12:10 PM, on                    

     the front lawn, next to the assembly plant.                 

   <<<<< 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                     

DRAWKYB

123456789*123456789*123456789*123456789*123456789*123456789*123456789*

   | ESC  | ! | @ | # | $ | % | ^ | & | * | ( | ) |___| + | ~ | | |

   |      | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | - | = | ` | \ |

123456789*123456789*123456789*123456789*123456789*123456789*123456789*

 | TAB  | Q | W | E | R | T | Y | U | I | O | P | { | } |DEL|

 |      |   |   |   |   |   |   |   |   |   |   | [ | ] |RUB|  

123456789*123456789*123456789*123456789*123456789*123456789*123456789*

|CTRL|CAPS| A | S | D | F | G | H | J | K | L | : | " |RETURN|

|    |LOCK|   |   |   |   |   |   |   |   |   | ; | ' |      |

123456789*123456789*123456789*123456789*123456789*123456789*123456789*

| SHIFT | Z | X | C | V | B | N | M | < | > | ? | SHIFT |LIN|

|       |   |   |   |   |   |   |   | , | . | / |       |FED|

123456789*123456789*123456789*123456789*123456789*123456789*123456789*

          |                                   |

          |        SPACE BAR                  |

**********FOOTER TO REQUEST CONTINUATION**********

  This is an insert in the 843.7 course which will provide some drills

  in what the UNIX file id crap is like

 Below is a subroutine to clear out the dialogue area of our screen.

LOOP1

 Below is a subroutine to paint over the contents of our terminal

 screen and put a $ in the appropriate place.

LOOP2

$PROMPT$ 

 This is the routie that draws the terminal

This is the routine that draws the file of reverse video which we will pipe into, etc.

AANVANG

    The standard input can be redirected.

    By redirecting the input, you are telling the command

    interpreter (the Shell) that instead of reading

    the data from your keyboard, it should read it from 

    the specified input file.

    The symbol used for input redirection is:

                       < 

To use a file as input for a command,

all you do is tell UNIX

command

^

|

|

The command

you want

 < 

^

|

|

The  <  symbol

for redirection

filename

^

|

|

The name of the

file you want the

input to come from

For example

|

|

|

|

:

-

-

>

mail

|

|

:

-

-

-

:

|

<

|

|

:

-

-

-

-

-

-

-

-

|

invitation

 Here, we have a mini typing test to make them use an upper case >,

    All you need to do is press the input redirection symbol,  < .

    Press both lit buttons on your keyboard now.

TYPSYM

 Please review your keyboard arrangement, so

 next time you have no problems typing  < :

CONTINUE

 SHIFT 

 < 

 , 

   No,  you didn't hold the SHIFT key down.

   Please try again, and be sure to hold the SHIFT key down

   WHILE you press the  <  key.

   No, you typed the symbol for redirecting OUTPUT.

   Please try again, and be sure to hold the SHIFT key down

   WHILE you hold press the  <  key.

   No, you used the wrong key.

   Please try again, and be sure to hold the SHIFT key down

   WHILE you press the  <  key.

???MD:  CONTROL-< doesnt give any error msg

     No, you used the CONTROL key instead of the SHIFT

     key.

     Please try again, and be sure to hold the SHIFT key down

     (not the CONTROL key) while you press the  <  key.

     You entered some sort of CONTROL key, but I wanted you to

     use the  < key.

     Please try again, and be sure to hold the SHIFT key down

     while you press the  <  key.

    Sorry, UNIX did not know what that was.  Please pay attention.

    Look at the keyboard on your screen.  Press BOTH the

    lit keys at the same time.

DOREDIR

  SHIFT 

  < 

 , 

     Very good.  You are now ready to proceed.

PRACRED1

Input redirection practice, - 1.7.2.0.1

 Let us use input redirection to mail the contents

 of the message in the file invitation to all

 office personnel.  Please enter the command

 to mail to office with input from invitation.

 $PROMPT$

 That is correct!

 You've got it on the 2nd try.

 Good, you understand the concept.

 Please type mail office with input from ( < ) invitation

 Please type mail office < invitation

 You will be helped this time.

 $PROMPT$

FORGET1

 mail office < invitation          

DRAWRED1

 Observe the result on the terminal!

 $PROMPT$