Linux had and still has the Linux Filesystem Hierarchy (http://tldp.org/LDP/Linux-Filesystem-Hierarchy/html/index.html http://tldp.org/LDP/Linux-Filesystem-Hier

Linux had and still has the Linux Filesystem Hierarchy (http://tldp.org/LDP/Linux-Filesystem-Hierarchy/html/index.html http://tldp.org/LDP/Linux-Filesystem-Hierarchy/html/index.ht...). It's true that it hasn't been 100% stable, but things do evolve and it's quite logical.