ubuntu16.04,终端tab键无法补全【已解决】

1：打开终端输入如下命令：

sudo gedit /etc/bash.bashrc

2：将下面代码注释取消

# 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

3：重启ubuntu

sudo reboot