Installing a Specific Version of a Ruby Gem
When working with Ruby gems, you might need to install a particular version of a gem to ensure compatibility with your project. Fortunately, Ruby's package manager, RubyGems, allows you to specify the version of a gem during installation.
Using the gem install Command
gem install command is used to install Ruby gems. To install a specific version of a gem, you can include the version number after the gem's name.
gem install gem_name -v version_number
gem_name is the name of the gem you want to install, and
version_number is the specific version you wish to install.
Suppose you want to install version 2.2.0 of the
rails gem. You can use the following command:
gem install rails -v 2.2.0
RubyGems will then fetch and install version 2.2.0 of the
rails gem along with its dependencies.
Checking the Installed Version
After installing the gem, you can verify that the correct version is installed.
gem list gem_name
This command will display a list of all installed versions of the specified gem.
gem list rails
This command will show a list of all installed versions of the
rails gem on your system.