Disable any output of roscore

edit

I have already seen many threads addressing this topic, but they seem to be slightly different. I am working on melodic and Ubuntu 18.04.

What I have tried so far:

• set log4j.threshold=OFF in rosconsole.config
• set export ROSOUT_DISABLE_FILE_LOGGING=True in .bashrc
• set ' param name="/rosout/omit_topics" value="true" ' in the launchfile

This does indeed turn of any INFO/WARN/ERROR but keeps the summary at the very beginning, when launching the roscore/launchfile. I need to be able to call

roscore

without any output in the screen. Ideally not even process[xyz]: starting or killing on exit output. The reason is, that I start and restart multiple instances, which basically makes my own logging disappear in a bunch of rosoutput.

Cheers