According to man sudo sudo -i starts a login shell and should in my understanding read/source ~/.profile, i.e. /root/profile or [non-root user home/.profile and /etc/profile. Adding aliases, e.g. alias ll='ls -la' to both files doesn't make the alias available in the shell started by sudo -i. If I run bash in the shell stared by sudo -i aliases are available.I already figured out to put aliases in /etc/profile.d/00-aliases.sh in https://askubuntu.com/questions/810730/how-to-share-bash-aliases-between-non-root-user-bash-and-shell-opened-by-sudo. Here I just want to know why the expected behaviour doesn't occur.I reported this as a sudo bug on launchpad.net, but now I'm not sure whether this might be a tricky aspect of expected behaviour. The way man sudo describes -i is too trivial anyway.
Which shell configuration files are read for the shell started with sudo -i?
bash;sudo;bashrc