df.rb

# -*- coding:utf-8 -*-
#earthquake.gem plugin
#show 'df -H' result in name

module TwitterOAuth
  class Client    
    def update_profile(params)
      post('/account/update_profile.json', params)
    end
  end
end

Earthquake.init do
  command :df do
    async_e { twitter.update_profile :name => "あと" + `df -H | grep "disk0s2"`.split("\s")[3] + "B" }
  end
end