Beginning css preprocessors

Listing 2-1.  Command for Installing Sass

sudo gem install sass

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After installation completes, you can verify it by running the command in Listing 

2-2

.

Listing 2-2.  Command for Verifying Sass Installation

sass -v

This should give you the output shown in Figure 

2-1

.

Figure 2-1.  Output of the sass-v command

Upon completing this installation, you are ready to use Sass.

Checking Other Versions of Sass

You can check for other available versions, beside latest version, by executing the command shown in  

Listing 

2-3

.

Listing 2-3.  Checking for Other Versions of Sass

gem list sass –a –r

This command asks Ruby to list all the gems that have “sass” in their name. The -r command attribute 

tells Ruby to check it remotely, where all Sass versions are available. The -a command attribute is for listing 

all available versions.

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The output of this gem list command is shown in Listing 

2-4

.