Install sass on Mac or Linux using ruby gem

Sass can be installed on Mac or Linux using ruby gem. To install sass follow these steps.

1. Install sass gem

   $ sudo gem install sass
   

2. In case you get the following error

   ERROR:  While executing gem ... (Errno::EPERM)
       Operation not permitted - /usr/bin/sass
   

   Then try installing sass in /usr/local/bin

   $ sudo gem install -n /usr/local/bin sass
   

3. List sass gem info

   $ gem list -d sass
   
   *** LOCAL GEMS ***
   
   sass (3.4.22)
       Authors: Natalie Weizenbaum, Chris Eppstein, Hampton Catlin
       Homepage: http://sass-lang.com/
       License: MIT
       Installed at: /Library/Ruby/Gems/2.0.0
   
       A powerful but elegant CSS compiler that makes CSS fun again.
   

4. Check sass version

   $ sass -v
   Sass 3.4.22 (Selective Steve)
   

5. Display contents in sass package

   $ gem contents -l sass