Re: Checking executability for asynchronous commands

[Chet Ramey]

On 12/26/20 4:10 AM, Markus Elfring wrote:
> > If you want the exit status of the child process, add `wait $!'
>
> Thanks for this information.
>
> Is there a need then to point the aspect out that exit values can be determined
> for child processes even if they terminated before a wait command would be 
> performed?


Is this what you mean? If you have the pid of an asynchronous command --
and the easiest way to get that pid is by referencing $! after it was
started -- you can call `wait' with that pid to retrieve the status, even
if it's already terminated.


--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/