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I am trying to understand how a shell script is working. The tutorial states that the script should be run as the following way:
source oe-init-build-env rpi-build
Usually when doing this kind of research I would do sh -x oe-init-build-env rpi-build. However this approach wouldn't be the optimal one here because it would run the script in a new shell.
Is there a way to run a script with source and pass it the sh flags?
Just add a set -x in the script you are sourcing. You can end that by adding set +x in the script, to e.g. limit the output of your debug work.
source <(echo "set -x"; echo "set -- rpi-build"; cat oe-init-build-env; echo "set +x")