I had my file/folder ownerships screwed up, so I thought I "restore" them by applying
chown -Rh root:root /
chown -Rh *username*:users /home/*username*
I did not know that some files are not owned by
root, so now I can't use sudo and some other services.
Is my os wrecked now or is there a way to restore the ownerships to defaults? Which files/folders are neither owned by root nor user?