mm() {
clear
  echo "                 My Main Menu"
  echo "  "
  echo "    1) Start X-Windows"
  echo "    2) Long file listing"
  echo "    3) Shutdown System"
  echo "    4) vi" 
  echo "  "
  read -p "     Pleae enter choice [1-4]: " choice
  case $choice in
  1) startx;;
  2) clear
     ls -alt | more;;
  3) clear
     echo " "
     echo " "
     read -p "Are you sure you want to shut down? - Y/N: " choice
     if [[ "$choice" = 'Y' ]] ; then
        shutdown -h now
     fi
     clear;;
  4) clear
     read -p "Please enter a filename: " infile
     vi $infile;;
  *) clear
     echo "Invalid Option";;
  esac
} 
DirList() {
clear
echo "     Directories are: "
echo " "
for filename in `ls -a`
do
    if [ -d $filename ]; then
      echo $filename
    fi
done
echo " "
echo "     The Regular Files are: "
echo " "
for filename in `ls -a`
do
    if [ -f $filename ]; then
      echo $filename
    fi
done
}