System 5 porting

[Guy Harris]

 >>I have done some porting of software from the bsd systems to system 5.
 >> ... [and I want references on what the differences might be] ...
 >
 >As well as other references cited in this thread (Lapin etc.), you might
 >try getting a copy of  UNIX System V Release 4.0 Migration Reference
 >Guide -- Berkeley System  from AT&T.

Note that this will describe the differences between BSD (4.3BSD,
probably) and S5R4 - which may not be quite as helpful if you're
interested in S5R3, say, since a lot of stuff that's in BSD and will be
in S5R4 isn't in vanilla S5R3 (symbolic links and job control, to give
two examples).