Beginning css preprocessors

Listing 2-5.  Checking the Prerelease Version Through the Command Line

gem list sass –pre –r

You can install the prerelease version if you want to try out all the bleeding-edge features that are not 

available in stable releases. Use the command shown in Listing 

2-6

 to do so.

Listing 2-6.  Installing the Prerelease Version

sudo gem install sass –pre

There may be situations where you might need to uninstall existing versions of Sass, such as to use an 

older version that supports some deprecated features used in the project. This can be done as in Listing 

2-7

.