How do I know if ruby gem is installed?

How do I know if ruby gem is installed?

Since your goal is to verify a gem is installed with the correct version, use gem list . You can limit to the specific gem by using gem list data_mapper . To verify that it's installed and working, you'll have to try to require the gem and then use it in your code.

How do I check my ruby application?

Step 1: Check Ruby Version First, check if you already have Ruby installed. Open the command prompt and type ruby -v. If Ruby responds, and if it shows a version number at or above 2.2. 2, then type gem --version.

Where is ruby gem installed?

When you use the --user-install option, RubyGems will install the gems to a directory inside your home directory, something like ~/. gem/ruby/1.9. 1 . The commands provided by the gems you installed will end up in ~/.

How do you test a ruby gem?

Real rubies glow with a deep, vivid, almost "stoplight" red. Fake gems are often dull: they are "light, but not bright." If the gem is more of a dark red, then it may be garnet instead of a ruby. If it is a real ruby, however, know that darker stones are usually worth more than lighter stones.

What is the Ruby gem command?

The interface for RubyGems is a command-line tool called gem which can install and manage libraries (the gems). RubyGems integrates with Ruby run-time loader to help find and load installed gems from standardized library folders.

How do I download RubyGems?

Open up the 'Software Center' app from your launcher and type in `RubyGems` without quotes into the application search box at the top right, and press [enter]. RubyGems then can be installed by just clicking on the button labeled 'Install', thats it.

How can I tell which version of Ruby is installed?

If using macOS, you probably already have Ruby installed. Check via the ruby --version command in terminal. Then let's list all the Ruby packages available to install. This will display all the known Ruby versions.

What does GEMS Ruby cover?

The Ruby option includes a PMSA that consists of 20% of your contribution that is allocated to a savings account held in your name. This account will pay for your out-of-hospital or day-to-day medical expenses. Once you've depleted your PMSA, your out-of-hospital claims will be paid from the limited block benefit.

How do I uninstall a Ruby gem?

How to Uninstall a Ruby Gem

1. Open a terminal. In Windows, you can do this by clicking "Start" and "Run." When the "Run" dialog appears, type "cmd." On Mac OS X, you can simply click the Spotlight button and type "Terminal."
2. Type the following command to uninstall a gem: ...
3. Answer any prompts given by the uninstall command.

How to check the version of Ruby on rails?

• Step 1: Check Ruby Version. First, check if you already have Ruby installed. Open the command prompt and type ruby -v. If Ruby responds, and if it shows a version number at or above 2.2.2, then type gem --version. If you don't get an error, skip Install Ruby step. Otherwise, we'll install a fresh Ruby.

How do I install Ruby on my computer?

• Follow the steps given below for installing Ruby on Rails. First, check if you already have Ruby installed. Open the command prompt and type ruby -v. If Ruby responds, and if it shows a version number at or above 2.2.2, then type gem --version.

How to update the latest version of Ruby?

• Use your package manager (aptitude, yum or something else) and download the latest package. How do you update your machine in general? when there is no ruby installed! when there is no ruby installed!

How to check if homebrew is installed on Ruby?

• brew doctor checks if Homebrew is installed and working properly. use either the which or type built-in tools. Another one possible way: Once you install Homebrew, type command brew doctor in terminal. then you are good to go and you have successfully installed homebrew. If you get any warnings, you can try fixing it.