?? looking at the contents of these files without explaining

 them is senseless--just to be doing something

TTYSFILE

1mconsole

1mtty02

1mtty03

1mtty04

0mtty05

0mtty06

06tty11

06tty12

01tty13

01tty14

TTYTYPE

ansi	console

ansi	tty02

ansi	tty03

ansi	tty04

ansi	tty05

ansi	tty06

dialup	tty11

dialup	tty12

dialup	tty13

dialup	tty14

INITTAB

       s = single-user

       2 = general single- or multi-user mode

is:s:initdefault:

sy:s:sysinit:/etc/brc </dev/console >/dev/console 2>&1

br:2:wait:/etc/bcheckrc </dev/console >/dev/console 2>&1

rc:2:wait:/etc/rc > /dev/window < /dev/w1 2>&1

co:s01234562:respawn:/etc/getty console console

ph0:2:off:/etc/getty ph0 1200

ph1:2:respawn:/etc/getty ph1 1200

00:2:respawn:/etc/getty -t60 tty000 9600 kt7

01:2:respawn:/etc/getty -t60 tty001 9600 vt100

02:2:respawn:/etc/getty -t60 tty002 9600 wy50

TTYDEFS

# 4-5-6: 2400 - 4800 - 9600 baud cycle	(direct connect via patchboard)

4 # B2400 HUPCL # B2400 SANE HUPCL TAB3 ECHOE FF1 IXANY #\r\n@!login: # 6

5 # B4800 HUPCL # B4800 SANE HUPCL TAB3 ECHOE FF1 IXANY #\r\n@!login: # 4

6 # B9600 HUPCL # B9600 SANE HUPCL TAB3 ECHOE FF1 IXANY #\r\n@!login: # 5

l # B4800 HUPCL # B4800 SANE HUPCL TAB3 ECHOE FF1 IXANY #\r\n@!login: # l

m # B9600 HUPCL # B9600 SANE HUPCL TAB3 ECHOE FF1 IXANY #\r\n@!login: # m

n # EXTA  HUPCL # EXTA  SANE HUPCL TAB3 FF1 IXANY #\r\n@!login: # n

o # EXTB  HUPCL # EXTB  SANE HUPCL TAB3 FF1 IXANY #\r\n@!login: # o

   <<<<< LEFT_CLEAN SUBROUTINE >>>>>>>>>>>>>>>>>>>>>

LNEXT

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

UTERMINAL

                 TERMINAL               

NEXT

 $V1$

 <<<<<<< Standout Line Procedure >>>>>>>>>>

LINE

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

PAUSE

 q to quit,  <CR> to continue

If they want to quit, do so

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

BOX

                          COMMAND                       

GO

 Adding terminals to the system involves 

 several steps besides connecting a wire

 from the computer to the terminal:

 COMPUTER SYSTEM

                          CPU    

                         Memory  

                   -------------------

   <<<<<<< ENCLOSURE DRAWING SUBROUTINE >>>>>>>>

NEXT7

 $V1$

 $V1$

                   -------------------

  Operating System

 U N I X

 Terminals

 --------------

 |             |

 |             |

 |             |

 |             |

 |             |

 --------------

 --------------

 |             |

 |             |

 |             |

 |             |

 |             |

 --------------

 --------------

 |            |

 |            |

 |            |

 |            |

 |  Terminal  |

 --------------

 ------

 --------

 ----------

 The system administrator needs to make corresponding 

 entries in several configuration files.

 These files are:

  /etc/ttys, . . .

        /etc/ttys   

      /etc/inittab  

  /etc/inittab, . . .

 J(UID$="Unix"): UNIXTAB

  /etc/ttys and /etc/ttytype.

  /etc/inittab and /etc/gettydefs.

        /etc/ttys      /etc/ttytype   

      /etc/inittab     /etc/gettydefs 

 You will learn more about modifying these files in a 

 later lesson, so for now we'll just take a quick look

 at the contents of these files:

 Let us check the contents of a

 typical /etc/ttys file by

 typical /etc/inittab file by

 using the cat command:

 $PROMPT$

 That is correct!

 You've got it on the 2nd try.

 Good, you understand the concept.

 Use cat to look at /etc/ttys

 Please type cat /etc/ttys

 Use cat to look at /etc/inittab

 Please type cat /etc/inittab

 You will be helped this time.

FORGET1

 cat /etc/inittab

 cat /etc/ttys

 Observe the result above.

 Skip over "ttytype" if UNIX

 J(UID$="Unix"): UNIX2TAB

 Now let us check the contents of a

 typical /etc/ttytype file by

 typical /etc/gettydefs file by

 using the cat command:

 $PROMPT$

 That is correct!

 You've got it on the 2nd try.

 Good, you understand the concept.

 Please use cat to look at 

 /etc/ttytype

 Please use cat to look at 

 /etc/gettydefs

 Please type cat /etc/ttytype

 Please type cat /etc/gettydefs

 You will be helped this time!

FORGET2

 cat /etc/ttytype

 cat /etc/gettydefs

 Observe the result above.

U: BOTCLEAN

*UNIX2TAB

CA: 15

U: LINE

U: UTERMINAL

CA: 17

 need an E?:

 T: Finally, let us check the partial

 : contents of a typical /etc/gettydefs

 : file by using the cat command:

 CA: 17,41

 TH: $PROMPT$

 A:

 M: cat /etc/gettydefs

 U: LCLEAN

 CA: 17

 TY1: That is correct!

 TY2: You've got it on the 2nd try.

 TY3: Good, you understand the concept.

 TN1: Please use cat to look at 

 : /etc/gettydefs

 TN2: Please type cat /etc/gettydefs

 TN3: You will be helped this time!

 JN3: FORGET3

 JY: FORGET3

 CA: 17,43

 TH:                                 

 CA: 17,43

 JN: @A

 *FORGET3

 PA: 2

 CAN: 17,43

 TNH: cat /etc/gettydefs

 PA: 2

 CA: 20

 T: Observe the result above.

 PA: 2

 CA: 2

 U:TTYDEFS

 U:PAUSE