gem install sass
If you installed as your "normal" user account (didn't sudo), you most likely missed the warning message like this one:
WARNING: Installing to ~/.gem since /Library/Ruby/Gems/1.8 and /usr/bin aren't both writable. WARNING: You don't have /Users/jclark/.gem/ruby/1.8/bin in your PATH, gem executables will not run. Try this:
export PATH=$PATH:~/.gem/ruby/1.8/bin show 3000 If that works, then simply do this to add it to your path every time you open a terminal.
echo "export PATH=$PATH:~/.gem/ruby/1.8/bin" >> ~/.bash_profile
sudo gem update --system sudo gem install compass
I did what you sugest and got:
Updating RubyGems ERROR: While executing gem ... (RuntimeError) No gem names are allowed with the --system option