#!/bin/sh
# from Glass & Ables, Unix for programmers and users, 2003
# slightly revised by cmc, 10/1/2010

echo menu test program
stop=0                     # reset loop termination flag.
while test $stop -eq 0     # loop until done.
do
 cat << ENDOFMENU             # display menu.
 1   : print the date.
 2, 3: print the current working directory.
 4   : exit
ENDOFMENU

 echo
 echo -n 'your choice? '     # prompt.
 read reply                  # read response.
 echo

# case statement demo
 case $reply in              # process response.
   "1")
     date                    # display date.
     echo
     ;;
   "2"|"3")
     pwd                     # display working directory.
     echo
     ;;
   "4")
     stop=1                  # set loop termination flag.
     ;;
   *)                        # default.
     echo illegal choice     # error.
     ;;
 esac
done