![]() A native install of the Ruby programming language will install the language’s binaries into a common bin directory on the operating system thus any change to those installed binaries will affect all Ruby applications hosted on the machine. RVM enables you to install multiple versions of the Ruby programming language on a single machine. Below we’ll discuss what RVM is, touching on each of the benefits that it has to offer. RVM (alternately expanded as Ruby enVironment Manager or Ruby Version Manager) tackles this problem head-on by providing a set of command-line tools that allow you to actively control not only the version of Ruby your application uses but also the Gem sets and versions it uses. Couple this potential with the use of third-party Gems that may depend on functionality within specific Ruby versions, and your application can quickly find itself struggling to meet all of the dependencies it needs just to execute. Ruby is an open-source language, so new releases can be frequent, and those releases can introduce drastic functionality changes. Managing multiple Ruby environments can be a challenge. Of course, you will find more detailed information of what RVM capable of in its official web site.Image: Ruby Logo by Yukihiro Matsumoto, Ruby Visual Identity Team / licensed under CC BY-SA 2.5 I hope you find this useful: these are the baby steps to start with RVM, and I think they a good introduction to the tool. So, if you want to switch from version 1.9.3 to 2.2, you just need to type:Īnd the command line will notify you that you are currenty using Ruby version 2.2. To switch between different version, you can use the following command: For example, to have the latest stable version, 2.2, just enter:Īnd it will install that version in your machine. 1.9.3) and then install it:Īnd that's it! Know you have installed Ruby 1.9.3 in your machine, but you can continue installing more version as you needed. With the following command, you can list the available Ruby versions to install:įrom the list, identified the Ruby version you needed (i.e. The primary RVM use is to have multiple Ruby version installed in the same machine. The previous line loads RVM into a shell session. ![]() Once the command finishes, you will need to add the follow to your. -L: If the server reports that the requested page has moved to a different location, this option will make curl redo the request on the new place.-s: Don't output anything in the command line terminal.If you are not familiar with the command line, the cURL command gets content from a given URL, and options passed are: Once the public key is installed in your computer, you can install RVM: You will need to install gpg2 package to run the previous command (if you're on Mac, you can install it using Homebrew). The first thing you will need to do is install the mpapis public key (mpapis is the username of Michal Papis, RVM main developer): RVM was craeted thinking on help developers to cover all those scenarios (and even more). You want to test a different interpreter, like JRuby or IronRuby You want to test how your Rails project behaves with the latest update to the language, You have several projects that each support different versions of the same Gem, ![]() You have several projects and each of them works with a different Ruby version, As a curious Ruby developer, you might have to deal with scenarios where:
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