UNIX for Dummies Questions & Answers

#!/bin/ksh
trap "" 2

if [ `/bin/who |/bin/grep "^$LOGNAME " |/bin/wc -l |/usr/bin/awk '
{print $1}'` -lt "2" ]
then
ulimit -c 2
while [ 1 ]
do
   tput clear
   echo ""
   echo "            ********************************************"
   echo "             Promotion Administrator Menu"
   echo "            ********************************************"
   echo ""
   echo "            1.  Prod Menu Screen"
   echo ""
   echo "            2.  Test Menu Screen"
   echo ""
   echo "            3.  Change Password"
   echo ""
   echo "            4.  System Messages"
   echo ""
   echo "            5.  Exit"
   echo ""
   echo "                Enter Choice : \c"
   read choice
   case $choice in
        1) /usr/bin/goprod;;
        2) /usr/bin/gotest ;;
        3) /usr/bin/passch ;;
        4) /usr/bin/sysmsg.sh ;;
        5)
      tput clear
      echo "              *******************************************"
      echo "                    Exit from System Completed."
      echo "              *******************************************"
      exit ;;
        *) echo "\n                     Invalid Option" ;;
   esac
done
else
        echo "Too Many Login Attempts."
        /usr/local/bin/excesslogins.sh
        echo "Pausing 10 seconds before closing window"
        sleep 10
        exit
fi