Quick tip: In Linux, you can copy from the terminal with Ctrl + Shift + C and paste with Ctrl + Shift + V. (This may work in other Linux distributions you’ll have to try!) If you’re using Ubuntu or Xubuntu, simply press Ctrl + Alt + T to open the terminal.
#Update ruby brew install
We’ll use the terminal to install all of the programs. Step 1: Install Updates, Packages and Librariesīefore we can install Ruby, we need to install some base packages. Ignore that and follow our instructions for now. In some instances, you might see a message in the terminal telling you to use sudo and install something with apt.
Failing to follow this can cause a lot of headaches, and never run as the root user.
Do NOT use sudo unless The Odin Project specifically says to do so.Follow the directions closely, and don’t skip over any sections.Copy and paste the commands to avoid typos.This section is where you could potentially encounter a lot of errors.īefore continuing, let’s review a few best practices to keep in mind: For example, gem which jekyll locates the Jekyll gem: /Users/jeff/.rvm/gems/ruby-2.2.0/gems/jekyll-2.5.3/lib/jekyll.Before we start learning, we’ll need to install Ruby first. find out where a particular gem is installed, use the gem which command. The following lines of output shows that gems will be installed in the folder XXX. You can check where gems will be installed with: gem env The RVM-managed version of Ruby responds with: ruby 2.2.0p0 ( revision 49005 ) Īs I mentioned earlier, gems installed with RVM-managed versions of Ruby are located with the Ruby. You can confirm this by asking Ruby itself with: ruby -v Which tells us we’re using version 2.2.0 and that version 2.2.0 has been installed in my home folder away from the system Ruby. MacOS now responds with: /Users/jeff/.rvm/rubies/ruby-2.2.0/bin/ruby You can check that you’re using an RVM-managed version of Ruby with: which ruby The rvm use command selects a version of Ruby: rvm use 2.2.0 = * ruby-2.2.0 # => - current # =* - current & default # * - default You can list the versions of Ruby available to RVM with rvm list: rvm rubies I chose to install RVM with the latest stable version of Ruby, which at the time was 2.2.0: \curl -sSL | bash -s stable -rubyĪfter the installation completes, close the Terminal window and open a new one to make sure that Terminal picks up any environment changes. You should use the version on the RVM install page. I've listed the mapis public key install command here for illustration. I installed gpg with Homebrew: brew install gnupgĪfter you’ve installed gpg, you can install the mpapis public key: gpg -keyserver hkp:// macOS doesn’t ship with gpg so before installing the public key, you’ll need to install gpg. However, as the install page notes, you might need gpg. The first step is to install the mpapis public key. The RVM install page has comprehensive instructions for installing RVM that work on macOS. You can check which version of Ruby macOS is using with: ruby -v Installing RVM and Ruby If you’re using the system Ruby, macOS will respond with: /usr/bin/ruby To check that you’re currently using the system Ruby, open Terminal and type the following: which ruby You won’t need use sudo to install gems.Gems installed by RVM-managed versions of Ruby are installed within the hidden folder in your home folder containing that version of Ruby.RVM installs each version of Ruby in a hidden folder in your home folder so each version of Ruby you install doesn’t affect the system Ruby.RVM enables you to install multiple versions of Ruby and allows you to change which version you want to use.RVM is a tool for installing different versions of Ruby itself. The Ruby Version ManagerĪ better alternative to using the system Ruby is to install Ruby with RVM, the Ruby Version Manager. You’ll know when you’re about to change the system Ruby when you need to prefix a gem installation with sudo, for example: sudo gem install jekyllĪnother reason for not using the system Ruby is that it’s often several versions behind the latest stable version. Therefore, it’s best not to make changes to the system Ruby. However, the main caveat for using the bundled version, called the system Ruby, is that Apple bundles Ruby for it’s own use. Hands Off the System RubyĪpple bundles the Ruby programming language with macOS. This article explains why you should avoid using the version of Ruby bundled with macOS and should instead install your own version of Ruby with RVM, the Ruby Version Manager.
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