Re: os.execute returns munged exit status

[Rici Lake <lua@...>]

On 15-Oct-04, at 4:50 PM, David Given wrote:
> system() is implemented using wait(). There are a bunch of macros 
> available for pulling out useful info from the return code for wait(). 
> 'man wait' will give the list
> ...
> I think these are Posix; does anyone have a Posix reference anywhere?

This one is good: 
<http://www.opengroup.org/onlinepubs/009695399/toc.htm>

The description of the macros will be found at the bottom of this page:
 <http://www.opengroup.org/onlinepubs/009695399/functions/wait.html>

along with a minimalistic explanation of why they are used instead of 
just masking off the last byte, as was traditional.

R.