For the 2 missing commands ("initialization" and "log_preparation"), they are in the /usr/share/boot-sav/bs-init.sh file, which is in the "boot-sav" package. I checked the dependencies, i think there is no problem ("boot-sav" is required by the "clean-ubiquity" package).
ok for the sudoing, i don't change it then.
For the 2 missing commands ("initialization" and "log_preparation"), they are in the /usr/share/ boot-sav/ bs-init. sh file, which is in the "boot-sav" package. I checked the dependencies, i think there is no problem ("boot-sav" is required by the "clean-ubiquity" package).