chmod +x menu.sh

./menu.sh

#!/usr/bin/bash

menu()
{
echo ""
echo "1. Create .txt file"
echo "2. Add some text"
echo "3. View the .txt file"
echo "4. Clear the .txt file"
echo "5. Delete .txt file"
echo "6. Exit"

read -n1 opt

# Create .txt file
if [[ $opt = 1 ]]
then
touch /home/$USER/Desktop/NewFile.txt
clear
echo "Text File Created"
menu

# Add .txt to file
elif [[ $opt = 2 ]]
then
echo "this is a line" >> /home/$USER/Desktop/NewFile.txt
clear
echo "Text Added to File"
menu

# Display .txt file
elif [[ $opt = 3 && -f "/home/$USER/Desktop/NewFile.txt" ]]
then
clear
cat /home/$USER/Desktop/NewFile.txt
menu

# Clear .txt file
elif [[ $opt = 4 ]]
then
echo "" > /home/$USER/Desktop/NewFile.txt
clear
echo "Text File Cleared"
menu

# Delete .txt file
elif [[ $opt = 5 ]]
then
rm /home/$USER/Desktop/NewFile.txt
clear
echo "Text File Deleted"
menu

# Exit terminal
elif [[ $opt = 6 ]]
then
echo "Goodbye!!"
clear
exit

else
clear
menu
fi
}
menu