How to start screen in bash script or from /etc/rc.local on startup as a specific user

It takes some tinkering the main thing is that the "-dmS" flag allows screen to start without a session which of course sudo won't have.

solution:

/usr/bin/sudo -u user /usr/bin/screen -dmS nameyouchoose /script/start.bash


this doesn't work at all:

/usr/bin/sudo -u user "/usr/bin/screen /script/start.bash"


this doesn't work:

/usr/bin/sudo -u user /usr/bin/screen /script/start.bash

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