nick at craig-wood.com
Tue Apr 17 16:30:07 CEST 2007
Tim Arnold <tiarno at sas.com> wrote:
> Just discovered that my subprocess call with the preexec_fn wasn't doing
> what I thought.
> If 'machine' value is different than the current machine name, I want to
> remsh the command to that machine, but obviously I misunderstood the
> preexec_fn arg.
> Should I just put the remsh in the actual command instead of
The preexec_fn is run after the fork() but before the exec(). Ie a
new process has been made, but it hasn't started your task yet.
For example a classic use of preexec_fn is
You seem to be thinking it is pre-pending something to your command
line which isn't how it works.
Nick Craig-Wood <nick at craig-wood.com> -- http://www.craig-wood.com/nick
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