From: ThatWouldBeTelling@thevillage.com   
      
   John Levine wrote:   
   > It appears that Michael S   said:   
   >>> The last widely used single address space systems I can think of were   
   >>> OS/VS1 and OS/VS2 SVS,   
   >> How would you call OS/400 (nowadays, IBM i) ?   
   >   
   > I haven't looked at it for a while but I think you're right.   
   > They have POSIX compatible APIs, wonder how that works.   
      
   For operating systems like VMS and WNT that cannot fork (duplicate a   
   parent virtual space into a child) Posix allows spawn() instead.   
      
   Spawn is equivalent to fork()/exec() and CreateProcess() in that   
   it creates a new address space, loads an exe, and starts a thread.   
   Like fork() and WNT CreateProcess(), spawn() allows open file descriptor   
   handles to be passed to the child.   
      
   https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/spawn.h.html   
      
   https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_spawn.html   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)