如果已经安装tex环境，可执行如下操作：

1. 下载vim-live-latex-preview并安装

2. 安装mupdf: sudo apt-get install mupdf

3. 安装xdotool：sudo apt-get install xdotool

用法：

A plugin for creating a live-updating PDF preview for a LaTeX file in MuPDF

Default key bindings:~

o = Begin/end auto-compilation and live-updating (Note:
      starting live compilation will also open PDF preview.)
p = Open/close PDF preview window. (Note: closing the
      PDF preview will also stop auto-compilation.)
s = Check the result of the last compilation;
      jump to first error in case of errors.
f = Forward search to page in PDF matching cursor
      position in source.
r = Reverse/inverse search to position in source
      matching active page in MuPDF. (Very approximate.)
c = End any compilations in progress, and begin new compilation
      now. (Useful for un-"stick"ing stalled compilations.)
      Note: if auto-compilation is turned off, this will still
      compile and show the results inside vim.

<PageUp>, <PageDown>, <Up>, <Down>, <Right>, <Left>, G
   m, t, -, +, = = Send the corresponding keystrokes
   to the MuPDF preview without losing focus on vim Window