Well, I must admit I didn't try every link so perhaps one of them might be valid but lets see what happens when we try the first few:

  cweb - The requested URL /~uno/cweb.html was not found on this server.
  Axioms and Hulls - The requested URL /~uno/aah.html was not found on this server.
  Computer Musings - The requested URL /~uno/musings.html was not found on this server.

Don't waste your time with this page, use the one dimitar posted instead: http://www-cs-faculty.stanford.edu/~knuth/programs.html