Debian系统root账号下Terminal无自动补全功能

1、su切换到root账号，安装bash-completion

apt install bash-completion

2、切换到非root账号，打开.bashrc找到以下内容并复制

# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
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

3、将复制的内容粘贴到root用的.bashrc

4、. .bashrc，重新加载bash