Install compass in Mac Os El Capitan
So, $ sudo gem install compass is not working? Do you have ruby installed? If not install it using brew: $ sudo brew install ruby First try updating your gem version: $ sudo gem update --system Then try again installing compass: $ sudo gem install compass Oh... now you get a: Fetching: compass-1.0.3.gem (100%) ERROR: While executing gem ... (Errno::EPERM) Operation not permitted - /usr/bin/compass Run the following: $ sudo gem install -n /usr/local/bin compass Done.