Someone

#!/bin/tcsh
printf "Please Enter the File's Directory name or Q to Exit program>"
set directory  = $<
#while ($directory != "" && !(-e $directory)) #Keep prompting until the user types a correct folder

while (1) #Continue looping until the user decides to type something intelligent
     if ($directory != "") then #Make sure no null input is given causing -e to crash
         if (-e $directory) then
            break; #Continue asking for filename if directory exists
         else if ($directory == 'Q' || $directory == 'q') then #Or give up if they cannot remember and exit
            echo "Exiting Program...We will miss you! :(..."
            exit(0)
         endif
      endif
echo "Directory $directory Does not Exist!"
printf "Please Enter the File's Directory name or Q to Exit program>"
set directory  = $<
end
return $directory