Please don't say `Linux operating system', it is unfair to those who
actually wrote it, the GNU project. Linux is an important part of the
GNU system, but it is not the system -- it is a kernel. You can help
us spread that knowledge by talking about GNU when you talk about
GNU-powered software distributions (a la GNU/Linux instead of just
Linux). Please see http://www.gnu.org/gnu/linux-and-gnu.html for more
information.
My bad, thank you for the useful information.
The directory you mentioned does not exist.