Debian Tab Completion

sudo apt-get install bash-completion
sudo apt-get install --reinstall bash-completion

sudo vi /etc/bash.bashrc

# enable bash completion in interactive shells
if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

sudo -s
sudo source /etc/bash.bashrc
sudo -s source /etc/bash.bashrc
source /bin/bash /etc/bash.bashrc