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Re: Using exec with & - what might I get back? [message #173662 is a reply to message #173655]

Mon, 25 April 2011 15:18

Peter H. Coffin
Messages: 245
Registered: September 2010

Karma:

Senior Member

On Sun, 24 Apr 2011 12:03:13 +0100, Tim Streater wrote:
> If I do this:
>
> exec ("/path/to/some/prog &", $results, $status);
>
> will I ever get anything at all back in $results and $status? Or will
> $results always be empty and $status always zero?

If /path/to/some/prog is startable (executable, parses, etc.), I
wouldn't expect any useful outcome in $results or $status. Essentially,
you're asking it to go into the background. If you want to wait around
for results, you'll have to drop the &. If you want to check back
later, that's outside the scope of this question; you'll have to write
/path/to/some/prog to report back by other means.

--
59. I will never build a sentient computer smarter than I am.
--Peter Anspach's list of things to do as an Evil Overlord

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[Message index]

		Using exec with & - what might I get back? By: Tim Streater on Sun, 24 April 2011 11:03
		Re: Using exec with & - what might I get back? By: Peter H. Coffin on Mon, 25 April 2011 15:18
		Re: Using exec with & - what might I get back? By: Tim Streater on Mon, 25 April 2011 18:11

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