How important is Posix?
ken: Not very.  Most Linux distros aren't POSIX (but oddballs like A/UX, Minix, and VxWorks are).  The /etc tree isn't in POSIX, nor is less(1).  POSIX doesn't even say that useful config data must be stored in text files.It sounds like what you really mean is that you want Windows to be more like the other Unix-like systems you use.  There's no standard for that.