Autocompletion doesn't work while logged as root

When you try autocomplete commands logged as super user with "sudo su" (to install software with apt-get for example), by default this option is unavailable. To enable the autocomplete for root user you need uncomment the last 3 lines in your /root/bash.bashrc file or add them if not exist.

if [ -f /etc/bash_completion ]; then
  . /etc/bash_completion
fi

Now, restart your bash:

$ bash --

Enjoy it!

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