Regular pipe vs. Named Pipe

[Leslie Mikesell]

In article <25293:Jun1217:36:2291 at kramden.acf.nyu.edu> brnstnd at kramden.acf.nyu.edu (Dan Bernstein) writes:

>In contrast, a system doesn't have to support named pipes to be UNIX.
>Lots of UNIX systems didn't---and still don't---have named pipes. So
>named pipes aren't part of UNIX. They're just an add-on, a feature which
>happens to be supported in similar ways by several vendors but isn't
>available everywhere.

In what way is this different from sockets?  Or any other IPC mechanism
besides plain files and signals that doesn't require a common parent to
set things up?

Les Mikesell
  les at chinet.chi.il.us