[Info-vax] Looking into C-include files on VMS

[Joerg Schilling]

In article <7kpigjF3af5v3U3 at mid.individual.net>,
Bob Eager  <rde42 at spamcop.net> wrote:
>On Tue, 27 Oct 2009 20:26:50 -0400, Richard B. Gilbert wrote:
>
>> VMS did not have a fork command.  It's a "Unixism".  SPAWN will create a
>> subprocess.  See HELP SPAWN.  It's a whole different programming
>> paradigm.  We have managed to get along without fork() for about thirty
>> years.
>
>But with some loss of functionality...  (ducks)

fork()/exec() are in the POSIX standard for a long time.

As there is no unique spawn() interface but many different and incompatible
implementations, there was posix_spawn() added very recently and it still
has a cruical interface in case you like to redirect stdin/stdout/stderr.

BTW: spawn() is similar to vfork()+exec()

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