1、利用vi编辑器打开 /etc/bash.bashrc文件(需要root权限)
sudo vi /etc/bash.bashrc2、找到文件中的下列代码
#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将注释符号#去掉,即改成
#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
fi3、最后 source一下 /etc/bash.bashrc即可, 即
sudo source /etc/bash.bashrc比如,我们要在文件管理器中直接使用右键打开终端,nautilus-open-terminal 
每次只记得nauti,所以我们这是后Tab键就可以帮助大忙了。
apt-get install nauti[Tab]       # apt-get install nautilus-open-terminal多多使用Tab键,帮助我们快速完成繁杂的拼写工作
原文:https://www.cnblogs.com/bonelee/p/8794243.html