The main point is that the "&" is not required. We agree that WNOHANG should be a bare word (its like that in 'C'). I do thank you for the Perl explanation!

In reply to Re^8: Using IO::CaptureOutput in a child process to caputre STDOUT and STDERR by Marshall
in thread Using IO::CaptureOutput in a child process to caputre STDOUT and STDERR by clintonm9

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