Re: shadowfs

[Kalle Olavi Niemitalo <tosi@stekt.oulu.fi>]

"Pankaj" <apenguinhead@yahoo.com> writes:

> i have a blur idea about shadowfs.
> is there a page that deals with the 
> topic from begining. pls direct me 
> to it so that i can understand what
> is going on.

The idea is to merge directory trees.  Assume you have /usr in a
separate file system and keep non-essential binaries in /usr/bin.
You could then make /bin a shadowfs which merges the original
/bin and /usr/bin, so that all executable programs appear in /bin
even though most of them really are in /usr/bin.  PATH=/bin would
then be enough.

IIRC, this has been implemented in some other operating system as
"unionfs".