These links each use the URL http://cs.smith.edu/~102b-xx/, for the specific two-letter xx beowulf account provided in class.
Because no filename is specified in the URL, what will be displayed is any default file name found in your public_html directory,
e.g., index.html. If you have no default filename there, it will display a listing of all files in the directory (which is not usually what
one wants).