On Fri, Jun 04, 2004 at 08:36:15AM -0700, Linus Torvalds wrote:
> 
> Add a tool to let people turn on/off the NX bit on an executable if it

the prelink rpm on Fedora has such a tool already fwiw.
(it's part of prelink because the elf manipulations needed are quite similar
to the ones prelink does so infrastructure is shared)