Incase it's easier to read with out the line numbers.....

#!/bin/ksh
while :
do
clear
cat <<++

**** MAIN MENU ****

1) Delete a file
2) Rename a file
3) Find a file
4) Display contents of a file using cat
5) Edit a file using vi
6) List the contents of a directory
7) Print todays date & time
8) Show users currently logged in
x) Exit
++

echo "Please enter your selection $LOGNAME \c'
read selection
case $selection in
1)
echo "Enter a filename: \c"
read fname
if [ -r $fname ]
then
rm $fname
else
echo "menu: Cannot access file $fname"
fi
;;
2)
echo "Enter a filename: \c"
read fname
echo "Enter a new filename: \c"
read frename
if [ -r $fname ]
then
cp $fname $frename
else
echo "menu: Cannot access the file $fname"
fi
;;
3)
echo "Enter a filename: \c"
read fname
find . -name "$fname" -print
;;
4)
echo "Enter a filename: \c"
read fname
if [ -r $fname ]
then
cat $fname
else
echo "menu: Cannot access the file $fname \c"
fi
;;
5)
echo "Enter a filename: \c"
read fname
if [ -r $fname ]
then
vi $fname
else
echo "menu: Cannot access the file $fname \c"
6)
echo "Enter a directory name: \c"
read dname
if [ -r $dname ]
then
ls -l $dname
else
echo "menu: Cannot access the directory $dname"
fi
;;
7)
date
;;
8)
who
;;
q|Q|e|E|x|X)
exit 0
;;
*) echo "Invalid choice. Try again.";;
esac
echo "Press Enter to continue \c"
done