/usr/share/doc/ruby1.8-examples/examples/fib.pl 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 9 10 11 | sub fib {
my($n)=@_;
if ($n<2) {
return $n;
}
else {
return fib($n-2)+fib($n-1);
}
}
print fib(20), "\n";
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