Tricks

Calculate Language Percentage in github:

Add the gem to Gemfile and run bundle install

gem 'github-linguist'

Run the foll command to find out the language contribution:

bundle exec linguist --breakdown

This provides a list like this

79.36%  Ruby
14.86%  HTML
2.41%   JavaScript
2.11%   CSS
1.26%   CoffeeScript

Commit for a file

<code>git log <filename></code> only shows commits that affect that file.