Comment by nanomonkey

I use multiple files, one per topic all in one folder. There is a file called main.org that contains the following embedded code, which creates an index of all of my org files

  * Org-files
  #+BEGIN_SRC sh
      for file in $(ls *.org)
      do 
      echo "[[~/org/$file][$file]]"
      done
  #+END_SRC