Re: reading from external command

[Alex fxmbsw7 Ratchev]

i did

with printf $BASHPID

bye

On Fri, Apr 1, 2022 at 1:41 AM Peng Yu <pengyu.ut@gmail.com> wrote:

> I don't get how to modify the while-loop (with unnamed pipes in the
> body) to get the exit code in the loop input unnamed pipe. Could you
> make it clear by showing a working example? Thanks.
>
> On 3/31/22, Chet Ramey <chet.ramey@case.edu> wrote:
> > On 3/30/22 6:32 PM, Peng Yu wrote:
> >> I am not sure how wait for "$!" would work robustly.
> >
> > You have to capture $! before it can be overwritten by another command.
> For
> > instance, you can assign it to another variable.
> >
> >> In the following example, it can not get the error in the input.
> >
> > Because you didn't do that.
> >
> > --
> > ``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/
> >
>
>
> --
> Regards,
> Peng
>
>