I realize now the subject doesn't reflect the final version of the mail,
sorry for that

Pier Paolo Grassi


Il giorno gio 19 gen 2023 alle ore 16:32 Pier Paolo Grassi <
pierpaolog@gmail.com> ha scritto:

> Hello, I want to populate an array from a long running process, something
> like:
>
> long_running_process | while read line
> do
>   array+=$line
> done
>
> problem is, since long_running_process does not continually produce output
> but only some times, when i try to interrupt this pipeline with ctrl-c I
> have to wait until it produces some output for the process to terminate
> (because, as I understand it, when it tries to write to the pipe it
> receives a sigpipe due to it being already closed)
>
> I have tried various constructs with trap and even coproc to be able to
> intercept the ctrl-c and send a sigpipe to the long running process, but to
> no result.
>
> I wonder if someone has some solution to share for this problem, thanks
>
> Pier Paolo Grassi
>