vim编辑器下，使用Vundle插件管理器安装NERDTree树形目录插件。
操作环境：

linux版本
vim版本

1. 安装vim

sudo apt-get install vim

2. Vundle插件管理器

2.1 安装

git clone http://github.com/gmarik/vundle.git ~/.vim/bundle/vundle

2.2 配置

在终端通过vim打开vim的配置文件，.vimrc

vim ~/.vimrc

添加配置信息（官方配置）

" vundle
set nocompatible              " be iMproved, required
filetype off                  " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
" alternatively, pass a path where Vundle should install plugins
"call vundle#begin('~/some/path/here')

" let Vundle manage Vundle, required
Plugin 'VundleVim/Vundle.vim'

" The following are examples of different formats supported.
" Keep Plugin commands between vundle#begin/end.
" plugin on GitHub repo
Plugin 'tpope/vim-fugitive'
" plugin from http://vim-scripts.org/vim/scripts.html
" Plugin 'L9'
" Git plugin not hosted on GitHub
Plugin 'git://git.wincent.com/command-t.git'
" git repos on your local machine (i.e. when working on your own plugin)
Plugin 'file:///home/gmarik/path/to/plugin'
" The sparkup vim script is in a subdirectory of this repo called vim.
" Pass the path to set the runtimepath properly.
Plugin 'rstacruz/sparkup', {'rtp': 'vim/'}
" Install L9 and avoid a Naming conflict if you've already installed a
" different version somewhere else.
" Plugin 'ascenator/L9', {'name': 'newL9'}

" All of your Plugins must be added before the following line
call vundle#end()            " required
filetype plugin indent on    " required
" To ignore plugin indent changes, instead use:
"filetype plugin on
"
" Brief help
" :PluginList       - lists configured plugins
" :PluginInstall    - installs plugins; append `!` to update or just :PluginUpdate
" :PluginSearch foo - searches for foo; append `!` to refresh local cache
" :PluginClean      - confirms removal of unused plugins; append `!` to auto-approve removal
"
" see :h vundle for more details or wiki for FAQ
" Put your non-Plugin stuff after this line

在" All of your Plugins must be added before the following line前加入所需插件即可。

3. NERDTree

3.1 添加插件到Vundle

在" All of your Plugins must be added before the following line前添加Plugin 'scrooloose/nerdtree'

Plugin 'scrooloose/nerdtree'
" All of your Plugins must be added before the following line

4. 安装插件

在vim底行模式下，执行:PluginInstall，等待执行完成后，可以看到左侧的列表已经有nerdtree插件，插件是自动安装的，安装路径在~/.vim/bundle下