/usr/share/doc/ruby1.8-examples/examples/fib.scm is in ruby1.8-examples 1.8.7.352-2ubuntu1.6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | (define (fib n)
(if (< n 2)
n
(+ (fib (- n 2)) (fib (- n 1)))))
(display (fib 20))
(newline)
(quit)
|