Size limitation for a table under linux ........

Hi,

I want to know if we can create a table > 2 Go under
linux because linux use ext2 ( and size file is limit to 2Go )

Why postgresql don't use directly the device like other
commercial DB ( sybase or oracle can permitt that ). Is it
more performant ???

So how can i create table with a size > 2Go under linux
with postgresql.

Thanks,

PEJAC Pascal