BS>> The spawn family of calls are unique to PC-based single-tasking
 BS>> operting systems, although they're also present in Win32 and OS/2
 BS>> systems for backwards code compatibility. 
 JdBP> Actually they aren't.  They are in Win32 and OS/2 compiler libraries 
 JdBP> because
 JdBP> they exactly match the paradigms used by the underlying operating 
 JdBP> system API. 
 JdBP> Both Win32 and OS/2 support the notion of creating a process from a 
 JdBP> named file,
 JdBP> and neither support the notion of creating a process by duplicating an 
 JdBP> already
 JdBP> running process.  
there is a spawn() call in linux/glibc, i think, but that's not POSIX
and that's not a system call either. It might be using vfork or a
similar thing.
matju
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