Re:Posix Abstractions in Modern Operating Systems: The Old, ...
by danieldk on Sunday May 08, 2016 @07:28AM
(#11653584)
Actually it does, POSIX also specifies many of the standard (text-based) UNIX utilities:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/co...
POSIX is not Unix.
Passing data around as text is a tenet of the Unix philosophy, while AFAIK POSIX doesn't mandate any of that.