How do you tell what gems are 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 find RubyGems?
You may browse and search for gems using the RubyGems website, or use the gem command. Using gem search -r , you can search RubyGems’ repository. For instance, gem search -r rails will return a list of Rails-related gems. With the –local ( -l ) option, you would perform a local search through your installed gems.
How do I remove all gems installed?
In order to uninstall all gems, you have to loop through all entries in gem list with bash scripting.
What are gems in Ruby on rails?
A gem is the equivalent to a plugin or an extension for the programming language ruby. To be exact even rails is nothing more than a gem. A lot of gems are built on rails or other gems (they are dependent of said gem) or are standalone.
Where are RubyGems installed on Windows?
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 ~/.
What is Gem_path?
ruby rubygems. RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called a “gem”), a tool designed to easily manage the installation of gems, and a server for distributing them.
How do I uninstall a specific version of Ruby?
Any gems that you install while using an RVM’s ruby version, is self contained in that version. However there may come a time when you no longer want to use a particular ruby version and want to delete it along with all it’s gems. Then this can be done using the “remove” command.
How do you clear a ruby gem?
To remove older gems we use the clean command: The cleanup command removes old versions of gems from GEM_HOME that are not required to meet a dependency. If a gem is installed elsewhere in GEM_PATH the cleanup command won’t delete it. If no gems are named all gems in GEM_HOME are cleaned.
Is Ruby a diamond?
Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond. The word ruby comes from ruber, Latin for red. The color of a ruby is due to the element chromium….
| Ruby | |
|---|---|
| Common impurities | Cr. (sometimes :Ti, Fe) |
| References |
Is rails a Ruby gem?
Rails is a web application development framework written in the Ruby language. It is designed to make programming web applications easier by making assumptions about what every developer needs to get started. It allows you to write less code while accomplishing more than many other languages and frameworks.
Where can I find Ruby on rails gems?
The Ruby community has created an enormous number of gems for use. Rubygems is the answer to- Which website hosts the ruby gem for ruby on rails. Rubygems is a public/community repository. The gemspec files and the gem file of all the gems will give you more information on the usability of the gem.
How to use bundler to install ruby gems?
Bundler will install these versions so when you deploy this application to production, or share your project with other developers, everyone will be working with an identical set of gems. List all your installed gems. Accepts an argument for filtering gems by name (example: gem list active) Gives you the path where a gem is installed.
Why do you group Ruby gems by environment?
This is used for gems that are limited in scope. Gems that you use in a specific rake task, but you don’t use in your Rails controllers & models. The benefit is that you save memory in your app code because you only load that gem when you need it. You can also group gems by environment.
Is the gem command included in Ruby 1.9?
The Gem command is included with Ruby 1.9+ now, and is a standard addition to Ruby pre-1.9.