On Friday, July 30, 2010, <hudsonco1@xxxxxxx> wrote: > > > I'm porting a linux app and I have some strange behaviour. I need to create > some directories under /usr. I can create /usr and subfolders under it. But I > cannot create files in these folders. Yeah -- you cannot create regular files in '/', only directories and possibly symlinks. See http://dev.haiku-os.org/ticket/2442 Also for porting software, you should try and update the code to not use /usr --mmadia