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From: Gerrit Pape <pape@smarden.org>
Newsgroups: gmane.comp.sysutils.supervision.general
Subject: Re: runit - access to run script's exit status for finish?
Date: Fri, 16 Sep 2005 08:15:47 +0000
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On Thu, Sep 15, 2005 at 01:10:04PM -0500, Charles Duffy wrote:
> Gerrit Pape wrote:
> >On Thu, Sep 15, 2005 at 08:18:06AM -0400, Paul Jarc wrote:
> >>Gerrit Pape <pape@smarden.org> wrote:
> >>># sv status -r .
> >>># 
> >>>./run didn't terminate yet, since the supervisor started.
> >>Since the supervisor started, or since the last time ./run was
> >>started?  The latter seems more useful to me.
> >
> >Yes, I agree.  It should print nothing if ./run (or ./finish with -f) is
> >currently running.
> 
> That's not very useful when chaining, though.
> 
> If you run "sv status -r -p -s ." in a shell script, you're probably 
> going to pipe it into something like "read exitstatus pid state"; 
> excluding the exit status entirely if the program is currently running, 
> then, means that you'd end up with your values stored in the wrong 
> variables -- certainly not a desirable outcome.

True.

> At minimum, a placeholder like "-" or "N/A" should be printed if one 
> desires to indicate that no exit has occured. (That said, I'm still fond 
> of my type:value syntax).

Okay, if you prefer that type:value output, it's fine with me also.  If
for some reason it turns out to be inconvenient, we can still change it
afterwards.

Regards, Gerrit.