UNIX for Dummies Questions & Answers

I'm programming a menu for an intro to unix class and am hung up on 2 required options. One has to exit from unix. The other has to get a command prompt by using one of the menu choices, then return to the menu via CTRL-D. below is my code

#!/bin/ksh
#Jimmy's happy menu
mesg y
msg="ON"
while :
do
clear
set `date`
case $1 in
Mon)
day="Monday"
;;
Tue)
day="Tuesday"
;;
Wed)
day="Wednesday"
;;
Thu)
day="Thursday"
;;
Fri)
day="Friday"
;;
Sat)
day="saturday"
;;
Sun)
day="Sunday"
;;
esac
case $2 in
Jan)
month="January"
;;
Feb)
month="February"
;;
Mar)
month="March"
;;
Apr)
month="April"
;;
May)
month="May"
;;
Jun)
month="June"
;;
Jul)
month="July"
;;
Aug)
month="August"
;;
Sep)
month="September"
;;
Oct)
month="October"
;;
Nov)
month="November"
;;
Dec)
month="December"
esac
echo "`whoami`'s Menu"
echo $day
echo "$month $3, $6"
echo $4 $5
echo " "
echo " "
echo "
1) List Current Directory
2) Show absolute path of current directory
3) Change current directory
4) Who's logged on
5) List all my processes
6) View a file
7) Edit a file
8) Read mail
9) Send mail
A) Open shell to run command (hit ^D when done)"
if [ "$msg" = "ON" ]
then
echo " B) Turn messages OFF"
else
echo " B) Turn messages ON"
fi
echo " Q) Quit this menu
E) Exit from UNIX"
echo " "
echo "Enter Command: "
read reply
case $reply in
1)
clear
ls -al .
echo "Hit <ENTER> to continue:"
read dummy
;;
2)
clear
pwd
echo "Hit <ENTER> to continue:"
read dummy
;;
3)
clear
echo "You're current working directory is `pwd`"
echo "Enter the filepath of the directory you wish to change to:
"
read pathname
clear
cd $pathname
echo "Your working directory has been changed to `pwd`"
echo "Hit <ENTER> to continue:"
read dummy
;;
4)
clear
who | more
echo "Hit <ENTER> to continue:"
read dummy
;;
5)
clear
ps
echo
echo "Hit <ENTER> to continue:"
read dummy
;;
6)
clear
echo "Enter the name of the file you wish to view:"
read fname6
cat $fname6 | more
;;
7)
echo "Enter the name of the file you wish to edit:"
read fname7
vi $fname7
;;
8)
clear
mail
echo "Hit <ENTER> to continue:"
read dummy
;;
9)
clear
echo "Enter the address of the person you are sending this mail
to:"
read recipient
echo "Enter the subject, then press <ENTER> to start typing your
message."
echo "After you complete you're message type the CTRL-D command
on a new line."
mail ~s $recipient
if [ $? -gt 0 ]
then
echo "There was an error sending your mail, plea
se try again."
else
echo "Your Mail has been sent succesfully to $re
cipient."
fi
echo "Hit <ENTER> to continue:"
read dummy
;;
9)
clear
read recipient
mail ~s $recipient
if [ $? -gt 0 ]
then
else
fi
;;
A|a)
clear
exec -l
;;
B|b)
if [ "$msg" = "ON" ]
then
msg="OFF"
mesg n
else
msg="ON"
mesg y
fi
;;
Q|q)
exit 0
;;
E|e)
(logout)
;;
*)
echo "$reply is not a valid selection....press <ENTER> to return
to the menu."
read dummy
;;
esac
done


Thank you in advance for your help, the menu items I need are E and A, the code listed under them atm doesnt really mean anything its just crap i was trying out to see what it did.

I'm sorry I made this post before reading the rules, I guess no homework help allowed.

I did figure out how to exit unix though.

exec
kill -9 -1

Thank you for reading the rules and for your understanding