ftp://ftp.tux.org/sites/tsx-11.mit.edu/sources/  direct

[DIR]usr.games/  direct  84 twin directories
[DIR]usr.bin.X11/  direct  57 twin directories
[DIR]usr.bin/  direct  1709+ twin directories
[DIR]test_suites/  direct  35 twin directories
[DIR]sbin/  direct  65535+ twin directories
[DIR]libs/  direct  20215+ twin directories