Linux file system structure



/
  bin/
  boot/
  dev/
  etc/
  home/
    foo/
    bar/
  lib/
  lost+found/
  media/
  mnt/
  opt/
  proc/
  root/
  sbin/
  tmp/
  usr/
  var/

Some parts might be mounted from other disk or even from other computers. This is transparent for us.