emotion:
I feel not comfortable with ubuntu 14.04 default desktop unity,i still look for a alternative for unity.after trying other linux desktop,i found cinnamon is better for me,so i decide to install cinnamon on ubuntu 14.04.the following steps is to install cinnamon 2.6 by ppa(Person Package Archives):
$ sudo add-apt-repository -y ppa:gwendal-lebihan-dev/cinnamon-nightly
$ sudo add-apt-repository -y ppa:moorkai/cinnamon
$ sudo apt-get update && apt-get install cinnamon