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Re: check if coproc has output

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@xxxxxxxxx> ha scritto:
Hello, I want to populate an array from a long running process, something like:

long_running_process | while read line

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

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