This has always puzzled me. Why does the root directory contain a reference to a parent directory?
bob@bob:/$ ls -a . build home lib32 mnt .rpmdb sys vmlinuz .. cdrom initrd.img lib64 opt sbin tmp vmlinuz.old bin dev initrd.img.old lost+found proc selinux usr boot etc lib media root srv var
I understand how directories are managed in the filesystem - each directory has n+2 pointers to itself (n = number of subdirectories inside the directory). One for each immediate subdirectory, one for its parent, and one for itself.
But what is