Improving software delivery in every organisation

Install a version of Ruby

Installing a version of ruby can be done by using rbenv. We should use version 2.6.3

Lets see if you can put together the command for that yourself.

Hint you might find rbenv doesn’t have a man page. If you find this the case, most commands provide help if you give them the -h option.

Setting your default Ruby version

You can set your default ruby version by creating a file ~/.ruby-version with the version number in it.

cd ~ ; echo "2.6.3" >> ~/.ruby-version

Stop and understand

  • What does ; do?
  • What does >> do?


You will also need Bundler. This is a tool that manages your Ruby Gems on a per project basis and lets you use different versions of the same Gem.

$ gem install bundler

To Do