Install basic development document under ubuntu

In order to query usage document of C library, it's convenient to install following two packages:

sudo apt-get install glibc-doc
sudo apt-get install manpages-dev

Then, we can use 'K' in vim to query the document. It needs a little configuration.

1. At first, add following configuration to .vimrc
   



set keywordprg=manall




2. Secondly, create a script named "manall"

#!/bin/sh

man -a $1