ftp://ftp.dulug.duke.edu/  direct

[DIR]redhat/  direct  7243+ twin directories
[DIR]pub/  direct  7473+ twin directories
[DIR]lost+found/  direct  1932+ twin directories
[DIR]fedora/  direct  5109+ twin directories
[DIR]duke/  direct  73 twin directories
[DIR]centos/  direct  185 twin directories
[DIR]apache/  direct  24421+ twin directories