After switching to Mac I found myself needing to install Ruby and Jekyll to update my blog. However, the process of installing Ruby was, well, less than straightforward. I decided to publish this short guide incase it can be of use to anyone else in the same boat.

1. Install Ruby

To install packages on macOS I use Homebrew. After installing Homebrew, Ruby can be installed by simply using the following command

brew install ruby

2. Update your PATH

The next step is to add the following to end of your .zshrc file

if [ -d "/opt/homebrew/Cellar/ruby/X.X.X/bin" ]; then
  export PATH=/opt/homebrew/Cellar/ruby/X.X.X/bin:$PATH
  export PATH=`gem environment gemdir`/bin:$PATH
fi

where X.X.X is the version of Ruby that was installed in the previous step. Now (in a new terminal window), the command which ruby should return the path specified above and the command ruby -v should return the correct version.

Voila! Now you should be ready to use Ruby for whatever you wish.