I don’t use Ruby much, but I wanted to use Jekyll for this blog. I kept getting this error when running
gem install jekyll:
Fetching: colorator-0.1.gem (100%) ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
I installed rbenv with
brew install rbenv and added
[[ -s $HOME/.rbenv/bin ]] && export PATH="$HOME/.rbenv/bin:$PATH" && eval "$(rbenv init -)"
.bashrc file. Then I changed the default ruby interpreter from the system interpreter to one managed by rbenv with
rbenv install 2.2.3 && rbenv global 2.2.3.