The NERDTree

Introduction

The NERDTree is a file system explorer for the Vim editor. Using this plugin,
you can visually browse complex directory hierarchies, quickly open files for
reading or editing, and perform basic file system operations. This plugin can
also be extended with custom mappings using a special API. The details of this
API and other NERDTree features is described in the included documentation.

Installation

pathogen.vim

git clone https://github.com/scrooloose/nerdtree.git ~/.vim/bundle/nerdtree

Then reload Vim, run :helptags ~/.vim/bundle/nerdtree/doc/, and check out :help NERDTree.txt.

apt-vim

apt-vim install -y https://github.com/scrooloose/nerdtree.git

F.A.Q.

Is there any support for git flags?

Yes, install nerdtree-git-plugin.

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Can I have the nerdtree on every tab automatically?

Nope. If this is something you want then chances are you aren't using tabs and
buffers as they were intended to be used. Read this
http://stackoverflow.com/questions/102384/using-vims-tabs-like-buffers

If you are interested in this behaviour then consider vim-nerdtree-tabs

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How can I open a NERDTree automatically when vim starts up?

Stick this in your vimrc: autocmd vimenter * NERDTree

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How can I open a NERDTree automatically when vim starts up if no files were specified?

Stick this in your vimrc:

autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif

Note: Now start vim with plain vim, not vim .

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How can I open NERDTree automatically when vim starts up on opening a directory?

autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | endif

This window is tab-specific, meaning it's used by all windows in the tab. This trick also prevents NERDTree from hiding when first selecting a file.

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How can I map a specific key or shortcut to open NERDTree?

Stick this in your vimrc to open NERDTree with Ctrl+n (you can set whatever key you want):

map <C-n> :NERDTreeToggle<CR>

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How can I close vim if the only window left open is a NERDTree?

Stick this in your vimrc:

autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

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Can I have different highlighting for different file extensions?

See here: https://github.com/scrooloose/nerdtree/issues/433#issuecomment-92590696

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How can I change default arrows?

Use these variables in your vimrc. Note that below are default arrow symbols

let g:NERDTreeDirArrowExpandable = '▸'
let g:NERDTreeDirArrowCollapsible = '▾'