[josephscott]

I like that FreeBSD dedicates a man page, HIER(7), on this topic - https://www.freebsd.org/cgi/man.cgi?query=hier - "layout of file systems"

[protomyth]

The other major BSDs:

http://man.openbsd.org/OpenBSD-current/man7/hier.7

http://netbsd.gw.com/cgi-bin/man-cgi?hier++NetBSD-current

https://www.dragonflybsd.org/cgi/web-man?command=hier&sectio...

[catern]

systemd has a man page on this as well, file-hierarchy(7): https://www.freedesktop.org/software/systemd/man/file-hierar...