How does gem install work?

Where does gem install things?

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 install 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. … The public repository helps users find gems, resolve dependencies and install them.

How do I install gem packages?

To install a gem, use gem install [gem] . Browsing installed gems is done with gem list . For more information about the gem command, see below or head to RubyGems’ docs. There are other sources of libraries though.

How do you run a gem?

Setting up Bundler

  1. Open a terminal window and run the following command: …
  2. Navigate to your project root directory.
  3. Install all of the required gems from your specified sources: …
  4. Inside your app, load up the bundled environment: …
  5. Run an executable that comes with a gem in your bundle:
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How do I install a specific version of a gem?

Use `gem install -v`

You may already be familiar with gem install , but if you add the -v flag, you can specify the version of the gem to install. Using -v you can specify an exact version or use version comparators.

How do I know if gem is installed?

Try gem list to get the list of gems that are installed. To test for a particular gem, you can use -i with a regex: gem list -i “^gem_name$” . (Credit to Timo in the comments for this technique.) If you can’t find data_mapper, it may be that the gem name is different from what you expect.

Is bundler a gem?

Bundler: a gem to bundle gems.

How do I create a locked GEM file?

If any dependencies in the Gemfile specify a platform then they will only be included in the Gemfile. lock when the lockfile is generated on that platform (e.g., through an install). A list of the dependencies which are specified in the Gemfile , along with the version constraint specified there.

What does gem install bundler do?

Bundler provides a consistent environment for Ruby projects by tracking and installing the exact gems and versions that are needed. Bundler is an exit from dependency hell, and ensures that the gems you need are present in development, staging, and production. Starting work on a project is as simple as bundle install .

What is the latest version of GEM?

“We are rapidly moving towards GeM 4.0 which is the new version of GeM. This will be much smarter, much more powerful feature rich and this will happen by September,” CEO of the Government e-Marketplace (GeM) Talleen Kumar said.

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How do I download a gem file?

3 Answers

  1. Create a new Folder with a File named Gemfile in it.
  2. Write a Source and the Gem you want to have the dependencys for into the File.
  3. Open a Commandline at this Folder an Execute: bundle install.
  4. This should download and install all Dependencys.
  5. Execute the Command bundle list if you wanna see it.


What bundle install does?

When we run bundle install in a project , if there is no Gemfile. lock exist, Bundler will fetch all remote sources, resolve dependencies and install all needed gems. When we update a version of a gem then run bundle install , only the gem will be updated. …

How do I uninstall a specific version of a gem?

Removing a specific gem

  1. sudo gem uninstall GEMNAME.
  2. sudo gem uninstall GEMNAME –version 1.1.0.
  3. sudo gem cleanup GEMNAME.
  4. sudo gem cleanup.


What is meant by gem of a person?

If you describe something or someone as a gem, you mean that they are especially pleasing, good, or helpful. …

Is Diamond a gemstone?

Diamond, a mineral composed of pure carbon. It is the hardest naturally occurring substance known; it is also the most popular gemstone. Because of their extreme hardness, diamonds have a number of important industrial applications.

Shine precious stones