redirect diagnostic output / logging to stderr

[cwbriones]

I want to have verbose logging enabled, but I still want to only capture the output of the wrapped command.

e.g.

$ out=$(JDKW_VERBOSE=1 ./jdk-wrapper.sh echo ok)
$ echo $out
ok

Expectation: The above prints ok

Observed: The above includes all of the logging from jdk-wrapper

I redirected the remaining logging commands that still printed to stdout.

[vjkoskela]

As discussed, the goal of JDK Wrapper is to be transparent to the output of the command when verbose is false. The wrapper program may also write to stderr. So remapping the wrapper's verbose output to stderr doesn't really separate it from the program's output.

If we need to add this functionality, I'm guessing it would require to directing verbose/program output to separate destinations. Obvious candidates include a file, named pipe or socket (maybe a logging server). This would probably add a fair bit of complexity to the wrapper.

Can you elaborate on your use case that you need verbose output but separately from the command output?